1
|
Asya O, Kavak ÖT, Özden HÖ, Günal D, Enver N. Demographic and clinical characteristics of our patients diagnosed with laryngeal dystonia. Eur Arch Otorhinolaryngol 2024:10.1007/s00405-024-08688-9. [PMID: 38710818 DOI: 10.1007/s00405-024-08688-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Accepted: 04/14/2024] [Indexed: 05/08/2024]
Abstract
PURPOSE Laryngeal dystonia (LD) is a focal dystonia affecting laryngeal musculature with no known etiology or cure. The present study evaluated the sociodemographic and clinical features of patients diagnosed with LD. MATERIALS AND METHODS All patients diagnosed with LD at our University Hospital's Ear, Nose, and Throat Department between January 2017 and July 2023 were retrospectively analyzed. The study included 43 patients. RESULTS Out of the 43 patients, 19 (44%) were male. At the time of diagnosis, the mean age of the patients was 35.1 years (ranging from 17 to 65 years). The mean elapsed time between the first symptom onset and the first diagnosis was 49.2 months (min. 4 months, max. 240 months). Of the participants, 94% had adductor-type LD. None of the patients had a family history of LD. Of the patients, 9 (20%) experienced a life-altering event or trauma just before the onset of symptoms. All patients who consumed alcohol reported symptom relief with alcohol intake. A total of 67.6% of patients stated that their symptoms were triggered by stress. All of our patients received at least one Botulinum toxin injection, with an average of 2.75 dosages per patient. CONCLUSION The gender distribution was approximately equitable between males and females. There was a tendency for men to receive a diagnosis earlier than women following the manifestation of symptoms. A significant number of patients associate the emergence of their symptoms with a stressful event or traumatic experience. This study represents the initial investigation into the sociodemographic characteristics of patients within the Turkish population.
Collapse
Affiliation(s)
- Orhan Asya
- Department of Otorhinolaryngology, Pendik Training and Research Hospital, Marmara University Faculty of Medicine, Fevzi Çakmak, Muhsin Yazıcıoğlu Street, 34899, Istanbul, Turkey
| | - Ömer Tarık Kavak
- Department of Otorhinolaryngology, Pendik Training and Research Hospital, Marmara University Faculty of Medicine, Fevzi Çakmak, Muhsin Yazıcıoğlu Street, 34899, Istanbul, Turkey.
| | - Hatice Ömercikoğlu Özden
- Department of Neurology, Pendik Training and Research Hospital, Marmara University Faculty of Medicine, Fevzi Çakmak, Muhsin Yazıcıoğlu Street, 34899, Istanbul, Turkey
| | - Dilek Günal
- Department of Neurology, Pendik Training and Research Hospital, Marmara University Faculty of Medicine, Fevzi Çakmak, Muhsin Yazıcıoğlu Street, 34899, Istanbul, Turkey
| | - Necati Enver
- Department of Otorhinolaryngology, Pendik Training and Research Hospital, Marmara University Faculty of Medicine, Fevzi Çakmak, Muhsin Yazıcıoğlu Street, 34899, Istanbul, Turkey
| |
Collapse
|
2
|
Leung JS, Rosenbaum A, Holmberg J, Villarroel P, Napolitano C, Badía PI, Lagos-Villaseca A. Improved vocal quality and decreased vocal effort after botulinum toxin treatment for laryngeal dystonia. Auris Nasus Larynx 2024; 51:106-112. [PMID: 37365040 DOI: 10.1016/j.anl.2023.06.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2023] [Revised: 05/24/2023] [Accepted: 06/14/2023] [Indexed: 06/28/2023]
Abstract
OBJECTIVES Laryngeal dystonia (LD) is characterized by irregular and involuntary task-specific spasms of the intrinsic laryngeal muscles. There is no curative treatment for it, however, laryngeal botulinum neurotoxin injections (BoNT-I) are considered the standard of care therapy. This study aims to characterize the population of LD patients and to assess the results of laryngeal BoNT-I. METHODS A Retrospective cohort study was conducted. Medical records were reviewed for all the patients with LD diagnosis seen in the Voice Unit of the Red de Salud UCChristus between January 2013 and October 2021. Biodemographic, clinical and treatment data were collected. Additionally, a telephonic survey was completed by the patients that underwent laryngeal BoNT-I, including self-reported voice outcomes and Voice Handicap Index 10 (VHI-10). RESULTS Of the 34 patients with LD included in the study, 23 received a total of 93 laryngeal BoNT-I and 19 completed the telephone survey. The majority (97%) of the injections corresponded to patients with adductor LD and 3% to abductor LD. Patients received a median of 3 (1-17) injections, with a more frequent cricothyroid approach (94.4%), while the thyrohyoid approach accounted for 5.6% of cases. Most injections were bilateral (96.8%). A significant improvement in the vocal quality and effort was noted after the last injection and the overall BoNT-I treatment (P < 0.001). Similarly, the VHI-10 score improved from a median of 31 (7-40) to 2 (0-19) (P < 0.001) after the last injection. A post-treatment breathy voice was reported in 95% of patients, and dysphagia to liquids and solids in 68% and 21%, respectively. CONCLUSIONS Laryngeal BoNT-I is an effective treatment for LD, achieving an improvement in self-reported vocal quality and VHI-10 scores, and a reduction of the self-reported vocal effort. Adverse effects are mild in the majority of cases, constituting a safe and effective therapy for these patients.
Collapse
Affiliation(s)
- Jai-Sen Leung
- Department of Otolaryngology, Faculty of Medicine, Pontificia Universidad Católica de Chile. Diagonal Paraguay 362, Otorrinolaringología, Santiago Centro, Santiago 8330077, Chile
| | - Andrés Rosenbaum
- Department of Otolaryngology, Faculty of Medicine, Pontificia Universidad Católica de Chile. Diagonal Paraguay 362, Otorrinolaringología, Santiago Centro, Santiago 8330077, Chile
| | - Jorge Holmberg
- Department of Otolaryngology, Faculty of Medicine, Pontificia Universidad Católica de Chile. Diagonal Paraguay 362, Otorrinolaringología, Santiago Centro, Santiago 8330077, Chile
| | - Pablo Villarroel
- Department of Otolaryngology, Faculty of Medicine, Pontificia Universidad Católica de Chile. Diagonal Paraguay 362, Otorrinolaringología, Santiago Centro, Santiago 8330077, Chile
| | - Carla Napolitano
- Department of Otolaryngology, Faculty of Medicine, Pontificia Universidad Católica de Chile. Diagonal Paraguay 362, Otorrinolaringología, Santiago Centro, Santiago 8330077, Chile
| | - Pedro I Badía
- Department of Otolaryngology, Faculty of Medicine, Pontificia Universidad Católica de Chile. Diagonal Paraguay 362, Otorrinolaringología, Santiago Centro, Santiago 8330077, Chile
| | - Antonia Lagos-Villaseca
- Department of Otolaryngology, Faculty of Medicine, Pontificia Universidad Católica de Chile. Diagonal Paraguay 362, Otorrinolaringología, Santiago Centro, Santiago 8330077, Chile.
| |
Collapse
|
3
|
Heffernan A, Hu A. Spasmodic Dysphonia Patients' Perception of Pain with Botulinum Toxin Injections. Laryngoscope 2024; 134:240-246. [PMID: 37409790 DOI: 10.1002/lary.30864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 06/13/2023] [Accepted: 06/16/2023] [Indexed: 07/07/2023]
Abstract
OBJECTIVES To evaluate spasmodic dysphonia patients' perception of pain associated with laryngeal botulinum toxin (BTX) injections and to determine factors associated with higher pain scores relative to other included patients. METHODS Prospective cohort study. Adult patients with adductor spasmodic dysphonia that presented to a tertiary laryngology practice for BTX injections were recruited from March to July 2022. Patients completed the visual analog scale (VAS) pre-procedure to quantify predicted pain. Ten minutes post-procedure they completed VAS and the short form McGill Pain Questionnaire (SF-MPQ). Factors that may affect pain were extracted from charts. Descriptive statistics, univariate, and multivariate analyses were conducted (alpha = 0.05). RESULTS One hundred and nineteen patients were included (63 ± 14 yo, 26% Male). SF-MPQ reported mild pain (4.12 ± 4.05 out of 45) with a pain intensity of none to mild (0.70 ± 0.89 out of 5). Bilateral injections yielded significantly higher SF-MPQ scores (5.19 ± 4.66) than unilateral injections (3.30 ± 3.30) (p = 0.012). There was a significant VAS reduction from pre 28.9 ± 24.6 mm (out of 10 mm) to post 24.5 ± 22.3 (p < 0.001). On multiple regression analyses, receiving a bilateral injection significantly (p < 0.05) contributed to a model that predicted higher pre-VAS (p = 0.013). Bilateral injections (p < 0.05) and higher VHI-10 (p < 0.05) contributed to a model that predicted higher total SF-MPQ (p = 0.001) and affective SF-MPQ (p = 0.001) scores. Not being a professional voice user (PVU) significantly (p < 0.05) contributed to a model that predicted higher post-VAS (p = 0.008) scores. CONCLUSIONS BTX injections were well tolerated with low pain scores. Factors associated with higher relative predicted or experienced pain included bilateral versus unilateral injection, PVU status, and higher VHI-10. LEVEL OF EVIDENCE 4 Laryngoscope, 134:240-246, 2024.
Collapse
Affiliation(s)
- Austin Heffernan
- Division of Otolaryngology-Head and Neck Surgery, Department of Surgery, University of British Columbia, Vancouver, British Columbia, Canada
| | - Amanda Hu
- Division of Otolaryngology-Head and Neck Surgery, Department of Surgery, University of British Columbia, Vancouver, British Columbia, Canada
| |
Collapse
|
4
|
Younce JR, Cascella RH, Berman BD, Jinnah HA, Bellows S, Feuerstein J, Wagle Shukla A, Mahajan A, Chang FCF, Duque KR, Reich S, Richardson SP, Deik A, Stover N, Luna JM, Norris SA. Anatomical categorization of isolated non-focal dystonia: novel and existing patterns using a data-driven approach. DYSTONIA 2023; 2:11305. [PMID: 37920445 PMCID: PMC10621194 DOI: 10.3389/dyst.2023.11305] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/04/2023]
Abstract
According to expert consensus, dystonia can be classified as focal, segmental, multifocal, and generalized, based on the affected body distribution. To provide an empirical and data-driven approach to categorizing these distributions, we used a data-driven clustering approach to compare frequency and co-occurrence rates of non-focal dystonia in pre-defined body regions using the Dystonia Coalition (DC) dataset. We analyzed 1,618 participants with isolated non-focal dystonia from the DC database. The analytic approach included construction of frequency tables, variable-wise analysis using hierarchical clustering and independent component analysis (ICA), and case-wise consensus hierarchical clustering to describe associations and clusters for dystonia affecting any combination of eighteen pre-defined body regions. Variable-wise hierarchical clustering demonstrated closest relationships between bilateral upper legs (distance = 0.40), upper and lower face (distance = 0.45), bilateral hands (distance = 0.53), and bilateral feet (distance = 0.53). ICA demonstrated clear grouping for the a) bilateral hands, b) neck, and c) upper and lower face. Case-wise consensus hierarchical clustering at k = 9 identified 3 major clusters. Major clusters consisted primarily of a) cervical dystonia with nearby regions, b) bilateral hand dystonia, and c) cranial dystonia. Our data-driven approach in a large dataset of isolated non-focal dystonia reinforces common segmental patterns in cranial and cervical regions. We observed unexpectedly strong associations between bilateral upper or lower limbs, which suggests that symmetric multifocal patterns may represent a previously underrecognized dystonia subtype.
Collapse
Affiliation(s)
- J. R. Younce
- Department of Neurology and Biomedical Research Imaging Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - R. H. Cascella
- School of Medicine, Washington University, St. Louis, MO, United States
| | - B. D. Berman
- Department of Neurology, Virginia Commonwealth University, Richmond, VA, United States
| | - H. A. Jinnah
- Department of Neurology, Emory University, Atlanta, GA, United States
- Department of Human Genetics, Emory University, Atlanta, GA, United States
| | - S Bellows
- Department of Neurology, Baylor College of Medicine, Houston, TX, United States
| | - J. Feuerstein
- Department of Neurology, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - A. Wagle Shukla
- Department of Neurology, University of Florida, Gainesville, FL, United States
| | - A. Mahajan
- Rush Parkinson’s Disease and Movement Disorders Program, Rush University Medical Center, Chicago, IL, United States
| | - F. C. F. Chang
- Movement Disorders Unit, Neurology Department, Westmead Hospital & Sydney Medical School, University of Sydney, Sydney, NSW, Australia
| | - K. R. Duque
- James J. and Joan A. Gardner Family Center for Parkinson’s Disease and Movement Disorders, Department of Neurology, University of Cincinnati, Cincinnati, OH, United States
| | - S. Reich
- Department of Neurology, University of Maryland, Baltimore, MD, United States
| | - S. Pirio Richardson
- Department of Neurology, University of New Mexico and New Mexico VA Healthcare System, Albuquerque, NM, United States
| | - A. Deik
- Parkinson Disease and Movement Disorders Center, Department of Neurology, University of Pennsylvania, Philadelphia, PA, United States
| | - N. Stover
- Department of Neurology, Heersink School of Medicine, The University of Alabama at Birmingham, Birmingham, AL, United States
| | - J. M. Luna
- Department of Radiology, School of Medicine, Washington University, St. Louis, MO, United States
| | - S. A. Norris
- Department of Radiology, School of Medicine, Washington University, St. Louis, MO, United States
- Department of Neurology, School of Medicine, Washington University, St. Louis, MO, United States
| |
Collapse
|
5
|
Loens S, Hamami F, Lohmann K, Odorfer T, Ip CW, Zittel S, Zeuner KE, Everding J, Becktepe J, Marth K, Borngräber F, Kollewe K, Kamm C, Kühn AA, Gelderblom M, Volkmann J, Klein C, Bäumer T. Tremor is associated with familial clustering of dystonia. Parkinsonism Relat Disord 2023; 110:105400. [PMID: 37086575 DOI: 10.1016/j.parkreldis.2023.105400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Revised: 03/17/2023] [Accepted: 04/11/2023] [Indexed: 04/24/2023]
Abstract
INTRODUCTION Dystonia is a movement disorder of variable etiology and clinical presentation and is accompanied by tremor in about 50% of cases. Monogenic causes in dystonia are rare, but also in the group of non-monogenic dystonias 10-30% of patients report a family history of dystonia. This points to a number of patients currently classified as idiopathic that have at least in part an underlying genetic contribution. The present study aims to identify clinical and demographic features associated with heritability of yet idiopathic dystonia. METHODS Seven hundred thirty-three datasets were obtained from the DysTract dystonia registry, patients with acquired dystonia or monogenic causes were excluded. Affected individuals were assigned to a familial and sporadic group, and clinical features were compared across these groups. Additionally, the history of movement disorders was also counted in family members. RESULTS 18.2% of patients reported a family history of dystonia. Groups differed in age at onset, disease duration and presence of tremor on a descriptive level. Logistic regression analysis revealed that tremor was the only predictor for a positive family history of dystonia (OR 2.49, CI = 1.54-4.11, p < 0.001). Tremor turned out to be the most common movement disorder in available relatives of patients, and presence of tremor in relatives was associated with tremor in index patients (X2(1) = 16.2, p < 0.001). CONCLUSIONS Tremor is associated with an increased risk of familial clustering of dystonia and with a family history of tremor itself. This indicates a hereditable dystonia-tremor syndrome with a clinical spectrum ranging from tremor-predominant diseases to dystonia.
Collapse
Affiliation(s)
- Sebastian Loens
- Institute of Systems Motor Science, University of Lübeck, Lübeck, Germany; Department of Rare Diseases, University Hospital Schleswig Holstein, Lübeck, Germany.
| | - Feline Hamami
- Institute of Systems Motor Science, University of Lübeck, Lübeck, Germany
| | - Katja Lohmann
- Institute of Neurogenetics, University of Lübeck, Lübeck, Germany
| | - Thorsten Odorfer
- Department of Neurology, University Hospital Würzburg, Würzburg, Germany
| | - Chi Wang Ip
- Department of Neurology, University Hospital Würzburg, Würzburg, Germany
| | - Simone Zittel
- Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Kirsten E Zeuner
- Department of Neurology, University Hospital Kiel, Kiel, Germany
| | - Judith Everding
- Department of Neurology, University Hospital Kiel, Kiel, Germany
| | - Jos Becktepe
- Department of Neurology, University Hospital Kiel, Kiel, Germany
| | - Katrin Marth
- Department of Neurology, University Hospital Rostock, Rostock, Germany
| | | | - Katja Kollewe
- Department of Neurology, Hannover Medical School, Hannover, Germany
| | - Christoph Kamm
- Department of Neurology, University Hospital Rostock, Rostock, Germany
| | - Andrea A Kühn
- Department of Neurology, Charité-Universitätsmedizin Berlin, Germany
| | - Mathias Gelderblom
- Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Jens Volkmann
- Department of Neurology, University Hospital Würzburg, Würzburg, Germany
| | - Christine Klein
- Institute of Neurogenetics, University of Lübeck, Lübeck, Germany
| | - Tobias Bäumer
- Institute of Systems Motor Science, University of Lübeck, Lübeck, Germany; Department of Rare Diseases, University Hospital Schleswig Holstein, Lübeck, Germany
| |
Collapse
|
6
|
Stephen CD, Dy-Hollins M, Gusmao CMD, Qahtani XA, Sharma N. Dystonias: Clinical Recognition and the Role of Additional Diagnostic Testing. Semin Neurol 2023; 43:17-34. [PMID: 36972613 DOI: 10.1055/s-0043-1764292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
Abstract
Dystonia is the third most common movement disorder, characterized by abnormal, frequently twisting postures related to co-contraction of agonist and antagonist muscles. Diagnosis is challenging. We provide a comprehensive appraisal of the epidemiology and an approach to the phenomenology and classification of dystonia, based on the clinical characteristics and underlying etiology of dystonia syndromes. We discuss the features of common idiopathic and genetic forms of dystonia, diagnostic challenges, and dystonia mimics. Appropriate workup is based on the age of symptom onset, rate of progression, whether dystonia is isolated or combined with another movement disorder or complex neurological and other organ system eatures. Based on these features, we discuss when imaging and genetic should be considered. We discuss the multidisciplinary treatment of dystonia, including rehabilitation and treatment principles according to the etiology, including when pathogenesis-direct treatment is available, oral pharmacological therapy, chemodenervation with botulinum toxin injections, deep brain stimulation and other surgical therapies, and future directions.
Collapse
Affiliation(s)
| | - Marisela Dy-Hollins
- Department of Neurology, Massachusetts General Hospital, Boston, Massachusetts
| | | | - Xena Al Qahtani
- Department of Neurology, Massachusetts General Hospital, Boston, Massachusetts
| | - Nutan Sharma
- Department of Neurology, Massachusetts General Hospital, Boston, Massachusetts
| |
Collapse
|
7
|
Arabia G, De Martino A, Moro E. Sex and gender differences in movement disorders: Parkinson's disease, essential tremor, dystonia and chorea. INTERNATIONAL REVIEW OF NEUROBIOLOGY 2022; 164:101-128. [PMID: 36038202 DOI: 10.1016/bs.irn.2022.06.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Sex and gender-based differences in epidemiology, clinical features and therapeutical responses are emerging in several movement disorders, even though they are still not widely recognized. In this chapter, we summarize the most relevant evidence concerning these differences in Parkinson's disease, essential tremor, dystonia and chorea. Indeed, both sex-related biological (hormonal levels fluctuations) and gender-related variables (socio-cultural and environmental factors) may differently impact symptoms manifestation and severity, phenotype and disease progression of movement disorders on men and women. Moreover, sex differences in treatment responses should be taken into account in any therapeutical planning. Physicians need to be aware of these major differences between men and women that will eventually have a major impact on better tailoring prevention, treatment, or even delaying progression of the most common movement disorders.
Collapse
Affiliation(s)
- Gennarina Arabia
- Magna Graecia University, Movement Disorders Center, Neurology Unit, Catanzaro, Italy.
| | - Antonio De Martino
- Magna Graecia University, Movement Disorders Center, Neurology Unit, Catanzaro, Italy
| | - Elena Moro
- Grenoble Alpes University, CHU of Grenoble, Division of Neurology, Grenoble Institute of Neurosciences, Grenoble, France
| |
Collapse
|
8
|
Botulinum Toxin Therapy for Spasmodic Dysphonia in Japan: The History and an Update. Toxins (Basel) 2022; 14:toxins14070451. [PMID: 35878189 PMCID: PMC9319467 DOI: 10.3390/toxins14070451] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 06/26/2022] [Accepted: 06/27/2022] [Indexed: 12/04/2022] Open
Abstract
Spasmodic dysphonia (SD) is a rare neurological disorder that impairs phonatory function by triggering involuntary and intermittent contractions of the intrinsic laryngeal muscles. SD is classified into three types: adductor SD (AdSD), abductor SD (AbSD), and mixed SD. Of these, AdSD accounts for 90–95% of disease; younger females are predominantly affected. Botulinum toxin injection into the laryngeal muscles is safe, minimally invasive, and very effective. Here, we review the history of clinical research for SD conducted in Japan. The first use of botulinum toxin injection therapy to treat SD in Japan was by Kobayashi et al. in 1989. The group developed an objective mora (syllable) method to evaluate SD severity. Recently, we conducted a placebo-controlled, randomized, double-blinded clinical trial of botulinum toxin therapy for AdSD and an open-label trial for AbSD to obtain the approval of such therapy by the Japanese medical insurance system. The mora method revealed significant voice improvement and the evidence was of high quality. Additionally, a clinical trial of type 2 thyroplasty using titanium bridges confirmed the efficacy and safety of such therapy. These studies broadened the SD treatment options and have significantly benefited patients.
Collapse
|
9
|
Yoshida K. Botulinum Toxin Therapy for Oromandibular Dystonia and Other Movement Disorders in the Stomatognathic System. Toxins (Basel) 2022; 14:282. [PMID: 35448891 PMCID: PMC9026473 DOI: 10.3390/toxins14040282] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 04/01/2022] [Accepted: 04/11/2022] [Indexed: 01/02/2023] Open
Abstract
Various movement disorders, such as oromandibular dystonia, oral dyskinesia, bruxism, functional (psychogenic) movement disorder, and tremors, exist in the stomatognathic system. Most patients experiencing involuntary movements due to these disorders visit dentists or oral surgeons, who may be the first healthcare providers. However, differential diagnoses require neurological and dental knowledge. This study aimed to review scientific advances in botulinum toxin therapy for these conditions. The results indicated that botulinum toxin injection is effective and safe, with few side effects in most cases when properly administered by an experienced clinician. The diagnosis and treatment of movement disorders in the stomatognathic system require both neurological and dental or oral surgical knowledge and skills, and well-designed multicenter trials with a multidisciplinary team approach must be necessary to ensure accurate diagnosis and proper treatment.
Collapse
Affiliation(s)
- Kazuya Yoshida
- Department of Oral and Maxillofacial Surgery, National Hospital Organization, Kyoto Medical Center, 1-1 Mukaihata-cho, Fukakusa, Fushimi-ku, Kyoto 612-8555, Japan
| |
Collapse
|
10
|
Bailey GA, Rawlings A, Torabi F, Pickrell O, Peall KJ. Adult-onset idiopathic dystonia: A national data-linkage study to determine epidemiological, social deprivation, and mortality characteristics. Eur J Neurol 2022; 29:91-104. [PMID: 34543508 PMCID: PMC9377012 DOI: 10.1111/ene.15114] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Accepted: 09/14/2021] [Indexed: 12/19/2022]
Abstract
BACKGROUND AND PURPOSE Accurate epidemiological information is essential for the improved understanding of dystonia syndromes, as well as better provisioning of clinical services and providing context for diagnostic decision-making. Here, we determine epidemiological, social deprivation, and mortality characteristics of adult-onset idiopathic dystonia in the Welsh population. METHODS A retrospective population-based cohort study using anonymized electronic health care data in Wales was conducted to identify individuals with dystonia between 1 January 1994 and 31 December 2017. We developed a case-ascertainment algorithm to determine dystonia incidence and prevalence, as well as characterization of the dystonia cohort, based on social deprivation and mortality. RESULTS The case-ascertainment algorithm (79% sensitivity) identified 54,966 cases; of these cases, 41,660 had adult-onset idiopathic dystonia (≥20 years). Amongst the adult-onset form, the median age at diagnosis was 41 years, with males significantly older at time of diagnosis compared to females. Prevalence rates ranged from 0.02% in 1994 to 1.2% in 2017. The average annual incidence was 87.7/100,000/year, increasing from 49.9/100,000/year (1994) to 96.21/100,000/year (2017). In 2017, people with dystonia had a similar life expectancy to the Welsh population. CONCLUSIONS We have developed a case-ascertainment algorithm, supported by the introduction of a neurologist-reviewed validation cohort, providing a platform for future population-based dystonia studies. We have established robust population-level prevalence and incidence values for adult-onset idiopathic forms of dystonia, with this reflecting increasing clinical recognition and identification of causal genes. Underlying causes of death mirrored those of the general population, including circulatory disorders, respiratory disorders, cancers, and dementia.
Collapse
Affiliation(s)
- Grace A. Bailey
- Neuroscience and Mental Health Research InstituteCardiff UniversityCardiffUK
| | | | - Fatemeh Torabi
- Swansea University Medical SchoolSwanseaUK
- Health Data Research UKSwanseaUK
| | - Owen Pickrell
- Swansea University Medical SchoolSwanseaUK
- Department of NeurologyMorriston Hospital, Swansea Bay University Health BoardSwanseaUK
| | - Kathryn J. Peall
- Neuroscience and Mental Health Research InstituteCardiff UniversityCardiffUK
| |
Collapse
|
11
|
Hyodo M, Asano K, Nagao A, Hirose K, Nakahira M, Yanagida S, Nishizawa N. Botulinum Toxin Therapy: A Series of Clinical Studies on Patients with Spasmodic Dysphonia in Japan. Toxins (Basel) 2021; 13:toxins13120840. [PMID: 34941678 PMCID: PMC8709071 DOI: 10.3390/toxins13120840] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Revised: 11/14/2021] [Accepted: 11/19/2021] [Indexed: 11/16/2022] Open
Abstract
Spasmodic dysphonia (SD) is a rare voice disorder caused by involuntary and intermittent spasms of the laryngeal muscles. Both diagnosis and treatment have been controversial. Therefore, a series of clinical studies has recently been conducted in Japan. A nationwide epidemiological survey revealed that adductor SD predominated (90–95% of all cases; 3.5–7.0/100,000), principally among young women in their 20s and 30s. To facilitate early diagnosis, we created diagnostic criteria for SD and a severity grading system. The diagnostic criteria include the principal and accompanying symptoms, clinical findings during phonation, the treatment response, and the differential diagnoses. The severity grade is determined using a combination of subjective and objective assessments. Botulinum toxin (BT) injection is the treatment of choice; however, there have been few high-quality clinical studies and BT has been used off-label. We conducted a placebo-controlled, randomized, double-blinded clinical trial of BT therapy; this was effective and safe. BT treatment is now funded by the Japanese medical insurance scheme. Studies thus far have facilitated early diagnosis and appropriate therapy; they have fostered patient awareness of SD.
Collapse
Affiliation(s)
- Masamitsu Hyodo
- Department of Otolaryngology-Head and Neck Surgery, Kochi Medical School, Nankoku 783-8505, Japan; (A.N.); (K.H.)
- Correspondence: ; Tel.: +81-88-880-2393
| | - Kento Asano
- Integrated Center for Advanced Medical Technologies, Kochi Medical School Hospital, Nankoku 783-8505, Japan;
- Department of Medical Innovation, Osaka University Hospital, Suita 565-0871, Japan
| | - Asuka Nagao
- Department of Otolaryngology-Head and Neck Surgery, Kochi Medical School, Nankoku 783-8505, Japan; (A.N.); (K.H.)
| | - Kahori Hirose
- Department of Otolaryngology-Head and Neck Surgery, Kochi Medical School, Nankoku 783-8505, Japan; (A.N.); (K.H.)
| | - Maya Nakahira
- Rehabilitation Department, Kochi Medical School Hospital, Nankoku 783-8505, Japan;
| | - Saori Yanagida
- Department of Communication Disorders, School of Rehabilitation, Health Sciences University of Hokkaido, Tobetsu 061-0293, Japan; (S.Y.); (N.N.)
| | - Noriko Nishizawa
- Department of Communication Disorders, School of Rehabilitation, Health Sciences University of Hokkaido, Tobetsu 061-0293, Japan; (S.Y.); (N.N.)
| |
Collapse
|
12
|
Yoshida K. Prevalence and incidence of oromandibular dystonia: an oral and maxillofacial surgery service-based study. Clin Oral Investig 2021; 25:5755-5764. [PMID: 33956216 DOI: 10.1007/s00784-021-03878-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Accepted: 03/08/2021] [Indexed: 10/21/2022]
Abstract
OBJECTIVES Oromandibular dystonia is a focal dystonia characterized by sustained or intermittent contractions of the masticatory and/or tongue muscles. This epidemiological study aimed to estimate the prevalence and incidence of oromandibular dystonia in Kyoto (population: 1,465,701). MATERIALS AND METHODS The population sample was citizens of Kyoto who visited our department between 2015 and 2019 and were differentially diagnosed by an oromandibular dystonia specialist having idiopathic (primary) and acquired (secondary) oromandibular dystonia. A total of 144 patients (100 women and 44 men; mean age, 57.5 years) were analyzed for clinical features, and the prevalence (prevalence date, January 1, 2020) and annual incidence were estimated. RESULTS The male-to-female ratio was 1:2.3 (p<0.001). Age at onset was significantly (p<0.01) earlier in men (47.5 years) than that in women (56.9 years). The crude prevalence of oromandibular dystonia was estimated at 9.8 per 100,000 persons (95% confidence interval: 8.3-11.6) (idiopathic dystonia, 5.7 [4.6-7.1]; tardive dystonia, 3.4 [2.5-4.5]) and incidence at 2.0 (1.3-2.8) per 100,000 person-years (idiopathic dystonia, 1.2 [0.68-1.9], tardive dystonia, 0.68 [0.32-1.3]). The prevalence was 13.0 (10.5-15.8) in women and 6.3 (4.6-8.5) in men. All age groups showed female predominance. The highest prevalence was 23.6 (14.4-36.5) in women aged 60-69 years. CONCLUSIONS As this is an oral and maxillofacial surgery service-based study, the actual prevalence of oromandibular dystonia may be even higher. CLINICAL RELEVANCE It was suggested that oromandibular dystonia might be more common than cervical dystonia or blepharospasm.
Collapse
Affiliation(s)
- Kazuya Yoshida
- Department of Oral and Maxillofacial Surgery, National Hospital Organization, Kyoto Medical Center, 1-1 Mukaihata-cho, Fukakusa, Fushimi-ku, Kyoto, 612-8555, Japan.
| |
Collapse
|
13
|
Defazio G, Berardelli A. Is Adult-Onset Dystonia a Rare Disease? Time for Population-Based Studies. Mov Disord 2021; 36:1119-1124. [PMID: 33724530 DOI: 10.1002/mds.28560] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Revised: 02/18/2021] [Accepted: 02/22/2021] [Indexed: 02/06/2023] Open
Affiliation(s)
- Giovanni Defazio
- Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy
| | - Alfredo Berardelli
- Department of Human Neurosciences, Sapienza University of Rome, Rome, Italy
| |
Collapse
|
14
|
Sude A, Matsumoto J, Kaimal S, Petersen A, Nixdorf DR. Temporomandibular disorder-related characteristics and treatment outcomes in Oromandibular Dystonia patients in two different clinical settings: A cross-sectional study. J Oral Rehabil 2021; 48:542-550. [PMID: 33682178 DOI: 10.1111/joor.13162] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 02/13/2021] [Accepted: 02/21/2021] [Indexed: 12/31/2022]
Abstract
INTRODUCTION Clinical presentation of oromandibular dystonia (OMD) is variable that can be further complicated by the presence of temporomandibular disorder (TMD) symptoms. We sought to evaluate variations in the clinical presentation of OMD patients, particularly TMD-related characteristics, in two clinical settings. METHODS In a cross-sectional study design, a Web-based data collection survey was provided to eligible patients with OMD from movement disorder (MD) and oro-facial pain (OFP) clinics. The survey questionnaire was designed to collect information on demographic characteristics, clinical presentation particularly related to TMD, quality of life and treatment outcomes. Validated questionnaires were used when available such as the TMD Pain Screener, EuroQol 5-Dimensions 5-Levels (EQ-5D-5L), Jaw Functional Limitation Scale and Global Rating of Change Scale. RESULTS Of 53 eligible patients, 31 responded to the survey for a 58% response rate. Forty-eight per cent of patients in the MD clinic and 60% of patients in the OFP clinic reported jaw pain along with involuntary movements. Of those, 90% from the MD group and 83% from the OFP group screened positive with the TMD Pain Screener at the onset of symptoms based on recall. Positive TMD Pain Screener response was observed in about 40% of patients in both clinics within 30 days of questionnaire response. No statistically significant differences were observed between two groups for any measured variables. CONCLUSION Patients with OMD have features of TMD, irrespective of the clinical setting in which they seek and receive care. OMD patients from both clinics were similar in terms of clinical presentation, quality of life and treatment outcomes.
Collapse
Affiliation(s)
- Asha Sude
- Division of TMD & Orofacial Pain, Department of Diagnostic and Biological Sciences, School of Dentistry, University of Minnesota, Minneapolis, MN, USA.,Department of Prosthodontics, University of North Carolina, Chapel Hill, NC, USA
| | - Joseph Matsumoto
- Department of Neurology, University of Minnesota, Minneapolis, MN, USA
| | - Shanti Kaimal
- Division of TMD & Orofacial Pain, Department of Diagnostic and Biological Sciences, School of Dentistry, University of Minnesota, Minneapolis, MN, USA
| | - Ashley Petersen
- Division of Biostatistics, School of Public Health, University of Minnesota, Minneapolis, MN, USA
| | - Donald R Nixdorf
- Division of TMD & Orofacial Pain, Department of Diagnostic and Biological Sciences, School of Dentistry, University of Minnesota, Minneapolis, MN, USA.,Department of Neurology, University of Minnesota, Minneapolis, MN, USA.,Department of Radiology, University of Minnesota, Minneapolis, MN, USA
| |
Collapse
|
15
|
Worthley A, Simonyan K. Suicidal Ideations and Attempts in Patients With Isolated Dystonia. Neurology 2021; 96:e1551-e1560. [PMID: 33504639 DOI: 10.1212/wnl.0000000000011596] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Accepted: 12/07/2020] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE To evaluate the hypothesis that individuals with isolated dystonia are at an increased risk for suicidal behavior, we administered an anonymous electronic survey to patients with dystonia, asking them about their history of suicidal ideations and suicide attempt. METHODS A total of 542 patients with dystonia completed an online 97-question survey, which captured the demographics of suicidal behavior and major psychiatric disorders. Statistical analyses examined the prevalence of suicidal behavior in patients with dystonia compared to the prevalence of suicidal ideations and attempt in the general global population and assessed the significance of risk associations between suicidality and psychiatric history in these patients. RESULTS Overall, 32.3% of patients with isolated dystonia reported a lifetime history of suicidal behavior, which was significantly different from the reported rates of suicidal ideation (9.2%) and attempt (2.7%) in the general global population. The prevalence of suicidality was higher in patients with multifocal/segmental and generalized forms of dystonia (range of 46%-50%) compared to patients with focal dystonias (range of 26.1%-33.3%). The highest suicidal ideation-to-attempt ratio of 4:1 was found in patients with generalized dystonia. Suicidality in patients with focal dystonia was significantly associated with history of depression and anxiety disorders. CONCLUSION Patients with isolated dystonia have an increased, albeit unrecognized, prevalence of suicidal behavior compared to the general global population. Screening for suicidal risk should be incorporated as part of the clinical evaluation of patients with dystonia to prevent their suicide-induced injury and death.
Collapse
Affiliation(s)
- Alexis Worthley
- From the Department of Otolaryngology-Head and Neck Surgery (A.W., K.S.), Massachusetts Eye and Ear; Department of Otolaryngology-Head and Neck Surgery (K.S.), Harvard Medical School; and Department of Neurology (K.S.), Massachusetts General Hospital, Boston
| | - Kristina Simonyan
- From the Department of Otolaryngology-Head and Neck Surgery (A.W., K.S.), Massachusetts Eye and Ear; Department of Otolaryngology-Head and Neck Surgery (K.S.), Harvard Medical School; and Department of Neurology (K.S.), Massachusetts General Hospital, Boston.
| |
Collapse
|
16
|
Hyodo M, Hisa Y, Nishizawa N, Omori K, Shiromoto O, Yumoto E, Sanuki T, Nagao A, Hirose K, Kobayashi T, Asano K, Sakaguchi M. The prevalence and clinical features of spasmodic dysphonia: A review of epidemiological surveys conducted in Japan. Auris Nasus Larynx 2020; 48:179-184. [PMID: 32861505 DOI: 10.1016/j.anl.2020.08.013] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2020] [Revised: 08/02/2020] [Accepted: 08/12/2020] [Indexed: 11/18/2022]
Abstract
OBJECTIVES Spasmodic dysphonia (SD) is a rare disease and its epidemiological status is unclear. This review aimed to explore the current prevalence and clinical features of SD in Japan. METHODS We reviewed Japanese surveys of SD and compared them to surveys reported from other countries. We focused on SD prevalence, clinical features (SD type, sex and age), and treatment modalities. RESULTS The SD prevalence in Japan was 3.5-7.0/100,000, similar to that in Rochester (NY, USA) and Iceland. Adductor SD predominated (90-95%) and females were four-fold more likely to be affected than males. Mean age at onset was approximately 30 years in Japan. Several years elapsed from onset to diagnosis. The most frequent treatment was botulinum toxin injection, and surgical intervention, particularly type 2 thyroplasty is becoming more popular. CONCLUSIONS Our review demonstrated some differences of clinical features of SD in Japan compared with other countries, such as a greater female predominance and younger age of onset. Many physicians and patients may be unfamiliar with the clinical features of SD leading to delayed of diagnosis. Therefore, we proposed diagnostic criteria to facilitate early diagnosis and an appropriate choice of treatment modalities.
Collapse
Affiliation(s)
- Masamitsu Hyodo
- Department of Otolaryngology, Kochi Medical School, Kohasu, Okou-cho, Nankoku, 783-8505 Kochi, Japan.
| | - Yasuo Hisa
- Kyoto University of Advanced Science, Japan
| | - Noriko Nishizawa
- School of Rehabilitation Sciences, Health Sciences University of Hokkaido, Japan
| | - Koichi Omori
- Department of Otolaryngology, Kyoto University, Japan
| | - Osamu Shiromoto
- Department of Communication Sciences and Disorders, Prefectural University of Hiroshima, Japan
| | - Eiji Yumoto
- Department of Otolaryngology, Kumamoto University, Japan
| | - Tetsuji Sanuki
- Department of Otolaryngology, Nagoya City University, Japan
| | - Asuka Nagao
- Department of Otolaryngology, Kochi Medical School, Kohasu, Okou-cho, Nankoku, 783-8505 Kochi, Japan
| | - Kahori Hirose
- Department of Otolaryngology, Kochi Medical School, Kohasu, Okou-cho, Nankoku, 783-8505 Kochi, Japan
| | - Taisuke Kobayashi
- Department of Otolaryngology, Kochi Medical School, Kohasu, Okou-cho, Nankoku, 783-8505 Kochi, Japan
| | - Kento Asano
- Integrated Center for Advanced Medical Technologies, Kochi Medical School Hospital, Japan; Academic Clinical Research Center, Department of Medical Innovation, Osaka University Hospital, Japan
| | - Masahiko Sakaguchi
- Integrated Center for Advanced Medical Technologies, Kochi Medical School Hospital, Japan; Department of Engineering Informatics, Osaka Electro-Communication University, Japan
| |
Collapse
|
17
|
Zhao K, Guillaud M, Hu A. Factors Associated with Failure of Botulinum Toxin Injection in Adductor Spasmodic Dysphonia. Ann Otol Rhinol Laryngol 2020; 129:996-1002. [DOI: 10.1177/0003489420928373] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Objective: Electromyography (EMG) Guided botulinum toxin (BTX) injection is considered first-line treatment for adductor spasmodic dysphonia (SD). Failure rate can range between 6% and 29%. Study objective was to determine which factors were associated with failure. Methods: This was a retrospective review conducted at a tertiary, academic center. Adductor SD patients presenting for BTX injections from August 2017 to October 2018 were eligible. Age, gender, Voice Handicap Index (VHI-10), Consensus Auditory-Perceptual Evaluation of Voice (CAPE-V), number of injections, disease duration, unilateral/bilateral injection, right/left injection, dose quantity, body mass index (BMI), professional voice user, employment, psychiatric comorbidity, breathiness, and dysphagia were investigated. Outcomes included failure as defined by the patient and dosage change. Univariate and multivariate statistical analysis was conducted. Results: Sixty seven out of 564 injections (12%) were categorized as failure by 131 patients. In multivariate analysis, dosage change was associated with shorter duration of good effect ( P < .001), BTX dose ( P = .016), breathiness ( P < .001), bilateral injection ( P = .024), dysphagia ( P = .012) and professional voice user ( P = .021). Failure was associated with first injection with a new physician ( P < .001), professional voice user P < .001) and lack of breathiness ( P = .003). Failure rate was not associated with age, gender, VHI-10, CAPE-V, disease duration, left/right injection, dose quantity, BMI, psychiatric comorbidity, and dysphagia. Conclusion: Failure rate was 12% and associated with patients’ first injection with a physician, professional voice user, and lack of breathiness. Dosage change occurred in 29% of injections and was associated with injection side effects, bilateral injections, BTX dose, professional voice user, and shorter duration of good effect. Level of evidence: 3
Collapse
Affiliation(s)
- Kevin Zhao
- Resident, Division of Otolaryngology–Head and Neck Surgery, University of British Columbia, Vancouver, BC, Canada
| | - Martial Guillaud
- Research Scientist, Department Integrative Oncology, BC Cancer, Adjunct Professor Department of Statistics, University of British Columbia, Vancouver, BC, Canada
| | - Amanda Hu
- Laryngologist, Pacific Voice Clinic, Clinical Associate Professor, Division of Otolaryngology-Head and Neck Surgery, University of British Columbia, Vancouver, BC, Canada
| |
Collapse
|
18
|
Sude A, Nixdorf DR. Prevalence and clinical characteristics of patients with oromandibular dystonia seen in the orofacial pain clinic: a retrospective study. Oral Surg Oral Med Oral Pathol Oral Radiol 2020; 130:169-174. [PMID: 32540317 DOI: 10.1016/j.oooo.2020.05.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 04/06/2020] [Accepted: 05/04/2020] [Indexed: 10/24/2022]
Abstract
OBJECTIVE The aim of this study was to describe the prevalence and clinical characteristics of patients with oromandibular dystonia (OMD) presenting to an academic orofacial pain clinic. OMD diagnosis was based on clinical signs and symptoms, presenting in varied forms and severities. Knowledge of clinical characteristics would help in early diagnosis and treatment of OMD. STUDY DESIGN In this retrospective study, we identified patients with OMD (International Classification of Diseases [ICD]-9 diagnostic code 333.82 and ICD-10 code G24.4) who presented at the clinic from October 2012 to December 2017. Additional selection criteria were age greater than 18 years and confirmation of OMD diagnosis with at least 1 follow-up visit. RESULTS Over a 5-year period, 22 patients with OMD were identified according to the ICD diagnostic codes, and of those, 6 patients met the selection criteria corresponding to a prevalence of 170 per 100,000 (95% confidence interval [CI] 70-390). The most common chief complaint was jaw pain (67%), and all patients had associated diagnosis of myofascial pain of masticatory muscles. CONCLUSIONS The prevalence of patients with OMD in an academic orofacial pain clinic is higher than previously reported in population-based studies. The presentation of OMD often includes temporomandibular disorders (TMDs), with involvement of various masticatory muscles.
Collapse
Affiliation(s)
- Asha Sude
- Division of TMD & Orofacial Pain, Department of Diagnostic and Biological Sciences, School of Dentistry, University of Minnesota, Minneapolis, MN, USA; Department of Neurosurgery, Medical School, University of Minnesota, Minneapolis, MN, USA
| | - Donald R Nixdorf
- Division of TMD & Orofacial Pain, Department of Diagnostic and Biological Sciences, School of Dentistry, University of Minnesota, Minneapolis, MN, USA; Department of Neurology, Medical School, University of Minnesota, Minneapolis, MN, USA; Health Partners Institute for Education and Research, Bloomington, MN, USA.
| |
Collapse
|
19
|
Krüger MT, Hu A, Honey CR. Deep Brain Stimulation for Spasmodic Dysphonia: A Blinded Comparison of Unilateral and Bilateral Stimulation in Two Patients. Stereotact Funct Neurosurg 2020; 98:200-205. [PMID: 32316007 DOI: 10.1159/000507058] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2019] [Accepted: 03/06/2020] [Indexed: 11/19/2022]
Abstract
Deep brain stimulation (DBS) is a promising new therapy for patients with spasmodic dysphonia (SD). The preliminary results from our randomized controlled trial showed good clinical effects with unilateral left thalamic stimulation in 6 right- handed patients. This suggests that the pathological process underpinning SD may have a "hemisphere dominant" pathway. We describe 2 patients with concurrent essential tremor and SD who had previously undergone bilateral thalamic DBS for their limb tremor. Both patients experienced an unanticipated improvement of their SD symptoms. One patient was right-handed, and the other was mixed left-handed. To investigate the amount of SD improvement following DBS therapy in each hemisphere, 4 different settings were tested: both sides on, left side on, right side on, and both sides off. Both patients most improved following bilateral stimulation. There was, however, a powerful unilateral benefit in both patients with only a small additional benefit from bilateral stimulation. The right-handed patient improved most with left-hemisphere stimulation whereas the mixed left-handed patient improved most with right hemisphere stimulation. There was some discrepancy between the two tests applied in the second patient reflecting the known difficulties to evaluate vocal symptom improvement in SD. We discuss the possible correlation of handedness and speech hemisphere dominance as well as the need for more reliable tests to measure SD severity. Ultimately, we recommend a bilateral approach for future studies, using a patient perception test as the primary outcome and functional imaging to further investigate the correlation of handedness and the amount of hemisphere dominance in SD.
Collapse
Affiliation(s)
- Marie T Krüger
- Division of Neurosurgery, University of British Columbia, Vancouver, British Columbia, Canada, .,Department of Neurosurgery, Cantonal Hospital St. Gallen, St. Gallen, Switzerland, .,Department of Stereotactic and Functional Neurosurgery, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany,
| | - Amanda Hu
- Division of Otolaryngology, Head and Neck Surgery, University of British Columbia, Vancouver, British Columbia, Canada
| | - Christopher R Honey
- Division of Neurosurgery, University of British Columbia, Vancouver, British Columbia, Canada
| |
Collapse
|
20
|
Britton D, Alty JE, Mannion CJ. Oromandibular dystonia: a diagnosis not to miss. Br J Oral Maxillofac Surg 2020; 58:520-524. [PMID: 32143935 DOI: 10.1016/j.bjoms.2020.02.018] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Accepted: 02/20/2020] [Indexed: 12/13/2022]
Abstract
Oromandibular dystonia (OMD) is characterised by sustained or repetitive involuntary movements of the jaw, face, and tongue. People with the condition may present to their dentist, general practitioner, or a secondary care specialist with non-specific symptoms including jaw or facial pain, bruxism, subluxations or dislocations of the jaw; fractured teeth or dental restorations, or both; or jaw tremor. Many clinicians are not aware of the disorder and this can lead to delayed diagnoses, unnecessary complications, and inappropriate treatment. OMD is an important diagnosis not to miss because referral for specialist management can provide good long-term results. To aid early, accurate diagnosis, this paper focuses on the key clinical features of the disorder and its dental and medical mimics.
Collapse
Affiliation(s)
- D Britton
- University Hospital of Wales, Cardiff and Vale University Health Board.
| | - J E Alty
- Leeds Teaching Hospitals NHS Trust; University of Tasmania, Australia.
| | | |
Collapse
|
21
|
LaHue SC, Albers K, Goldman S, Lo RY, Gu Z, Leimpeter A, Fross R, Comyns K, Marras C, de Kleijn A, Smit R, Katz M, Ozelius LJ, Bressman S, Saunders-Pullman R, Comella C, Klingman J, Nelson LM, Van Den Eeden SK, Tanner CM. Cervical dystonia incidence and diagnostic delay in a multiethnic population. Mov Disord 2020; 35:450-456. [PMID: 31774238 PMCID: PMC10683845 DOI: 10.1002/mds.27927] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Revised: 09/02/2019] [Accepted: 09/12/2019] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Current cervical dystonia (CD) incidence estimates are based on small numbers in relatively ethnically homogenous populations. The frequency and consequences of delayed CD diagnosis is poorly characterized. OBJECTIVES To determine CD incidence and characterize CD diagnostic delay within a large, multiethnic integrated health maintenance organization. METHODS We identified incident CD cases using electronic medical records and multistage screening of more than 3 million Kaiser Permanente Northern California members from January 1, 2003, to December 31, 2007. A final diagnosis was made by movement disorders specialist consensus. Diagnostic delay was measured by questionnaire and health utilization data. Incidence rates were estimated assuming a Poisson distribution of cases and directly standardized to the 2000 U.S. census. Multivariate logistic regression models were employed to assess diagnoses and behaviors preceding CD compared with matched controls, adjusting for age, sex, and membership duration. RESULTS CD incidence was 1.18/100,000 person-years (95% confidence interval [CI], 0.35-2.0; women, 1.81; men, 0.52) based on 200 cases over 15.4 million person-years. Incidence increased with age. Half of the CD patients interviewed reported diagnostic delay. Diagnoses more common in CD patients before the index date included essential tremor (odds ratio [OR] 68.1; 95% CI, 28.2-164.5), cervical disc disease (OR 3.83; 95% CI, 2.8-5.2), neck sprain/strain (OR 2.77; 95% CI, 1.99-3.62), anxiety (OR 2.24; 95% CI, 1.63-3.11) and depression (OR 1.94; 95% CI, 1.4-2.68). CONCLUSIONS CD incidence is greater in women and increases with age. Diagnostic delay is common and associated with adverse effects. © 2019 International Parkinson and Movement Disorder Society.
Collapse
Affiliation(s)
- Sara C. LaHue
- Department of Neurology, School of Medicine, University of California, San Francisco, California, USA
- Weill Institute for Neurosciences, Department of Neurology, University of California, San Francisco, San Francisco, California, USA
| | - Kathleen Albers
- Division of Research, Kaiser Permanente Northern California, Oakland, California, USA
| | - Samuel Goldman
- Department of Neurology, School of Medicine, University of California, San Francisco, California, USA
- San Francisco Veteran’s Administration Medical Center, San Francisco, California, USA
- Occupational and Environmental Medicine, School of Medicine, University of California, San Francisco, California, USA
| | - Raymond Y. Lo
- Hualien Tzu Chi Hospital/Tzu Chi University, Hualien, Taiwan
| | - Zhuqin Gu
- Department of Neurobiology, Xuanwu Hospital of Capital Medical University, Beijing, China
| | - Amethyst Leimpeter
- Division of Research, Kaiser Permanente Northern California, Oakland, California, USA
| | - Robin Fross
- Department of Neurology, Kaiser Permanente Hayward Medical Center, Hayward, California, USA
| | - Kathleen Comyns
- Department of Neurology, School of Medicine, University of California, San Francisco, California, USA
| | - Connie Marras
- Morton and Gloria Shulman Movement Disorders Centre and the Edmond J Safra Program in Parkinson’s Research, University of Toronto, Toronto, Canada
| | - Annelie de Kleijn
- Department of Neurology, Radboud University Nijmegen, Nijmegen, Netherlands
| | - Robin Smit
- Department of Neurology, Radboud University Nijmegen, Nijmegen, Netherlands
| | - Maya Katz
- Department of Neurology, School of Medicine, University of California, San Francisco, California, USA
- Weill Institute for Neurosciences, Department of Neurology, University of California, San Francisco, San Francisco, California, USA
- San Francisco Veteran’s Administration Medical Center, San Francisco, California, USA
| | - Laurie J. Ozelius
- Department of Neurology, Massachusetts General Hospital, Charlestown, Massachusetts, USA
| | - Susan Bressman
- Department of Neurology, Mount Sinai Beth Israel, New York, New York, USA
- Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Rachel Saunders-Pullman
- Department of Neurology, Mount Sinai Beth Israel, New York, New York, USA
- Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Cynthia Comella
- Department of Neurology, Rush University Medical Center, Chicago, Illinois, USA
| | - Jeffrey Klingman
- Department of Neurology, Kaiser Permanente Walnut Creek Medical Center, Walnut Creek, California, USA
| | - Lorene M. Nelson
- Department of Health Research and Policy, Stanford University, Stanford, California, USA
| | | | - Caroline M. Tanner
- Department of Neurology, School of Medicine, University of California, San Francisco, California, USA
- Weill Institute for Neurosciences, Department of Neurology, University of California, San Francisco, San Francisco, California, USA
- San Francisco Veteran’s Administration Medical Center, San Francisco, California, USA
| |
Collapse
|
22
|
Abstract
Blinking sustains the corneal tear film generated by sexually dimorphic lacrimal and meibomian glands. Our study examines whether trigeminal control of blinking is also sexually dimorphic by investigating trigeminal reflex blinking, associative blink modification, and spontaneous blinking in male and female rats before and after unilateral dry eye caused by exorbital gland removal. Before gland removal, female rats exhibited a lower threshold for evoking trigeminal reflex blinks, a weaker effect of associative blink modification, and longer-duration spontaneous blinks than males. Spontaneous blink rate, reflex blink excitability, and occurrence of blink oscillations did not differ between the sexes. Reanalysis of previous data showed that humans showed the same blink sexual dimorphisms as rats. During the first 2 wk of dry eye, trigeminal blink circuit excitability and blink oscillations steadily rose in male rats, whereas excitability and blink oscillations did not change in females. Following dry eye, spontaneous blink duration increased for both males and females, whereas spontaneous blink rate remained constant for males but decreased for females. The associative modification treatment to depress trigeminal blink amplitude initially produced blink depression in males that converted to blink potentiation as trigeminal excitability rose, whereas females exhibited progressively more blink depression. These data indicated that dry eye increased excitability in male trigeminal reflex blink circuits at the expense of circuit modifiability, whereas trigeminal modifiability increased in females. This increased modifiability of female trigeminal blink circuits with dry eye may contribute to the preponderance of females developing the focal dystonia, benign essential blepharospasm.NEW & NOTEWORTHY All the elements controlling the corneal tear film are sexually dimorphic. Blinking, which smooths and maintains the tear film, also exhibits sex differences. Dry eye increases the sexual dimorphisms of blinking, including increased exaggeration of excitability in males and enhanced modifiability of the female trigeminal complex. This increased modifiability may explain female predominance in the development of the focal dystonia, benign essential blepharospasm.
Collapse
Affiliation(s)
- Ashley Culoso
- Department of Neurobiology & Behavior, Stony Brook University, Stony Brook, New York
| | - Cynthia Lowe
- Department of Neurobiology & Behavior, Stony Brook University, Stony Brook, New York
| | - Craig Evinger
- Department of Neurobiology & Behavior, Stony Brook University, Stony Brook, New York
| |
Collapse
|
23
|
Li W, Tang M. Application of botulinum toxin in pregnancy and its impact on female reproductive health. Expert Opin Drug Saf 2019; 19:83-91. [PMID: 31868020 DOI: 10.1080/14740338.2020.1707803] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Introduction: Botulinum toxin (BoNT) is a protein secreted by the anaerobic Gram-negative bacterium Clostridium botulinum. Among the seven known subtypes, type A is the most commonly used in women to treat diseases. It primarily blocks presynaptic release of acetylcholine at the neuromuscular junction, resulting in temporary muscle paralysis; thus, it is suitable for treating dystonia and other systemic diseases. BoNT is used widely for treating diseases that persist throughout, and may worsen during, pregnancy, such as cervical dystonia and achalasia. Thus, it is important to investigate whether BoNT injection during pregnancy causes side effects in pregnant women, fetuses, or newborns.Areas covered: This review highlights the efficiency and safety of BoNT injection in pregnancy. and assessed current literature with respect to the use of BoNT for disease treatment during pregnancy.Expert opinion: BoNT injection does not increase the risk of complications in pregnant women and fetuses. However, the use of BoNT to treat disease during pregnancy requires fully informed consent from patients. In addition, further research is needed to determine how to reduce the side effects of BoNT injection during pregnancy (e.g., by improving drug composition, or adjusting the amount of BoNT or the injection interval).
Collapse
Affiliation(s)
- Wu Li
- Gynecology Department, Tongde Hospital of Zhejiang Province, Hangzhou, Zhejiang Province, P.R. China
| | - Min Tang
- Neurology Department, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province, P.R. China
| |
Collapse
|
24
|
Hellberg C, Alinder E, Jaraj D, Puschmann A. Nationwide prevalence of primary dystonia, progressive ataxia and hereditary spastic paraplegia. Parkinsonism Relat Disord 2019; 69:79-84. [PMID: 31706130 DOI: 10.1016/j.parkreldis.2019.10.028] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Revised: 10/02/2019] [Accepted: 10/27/2019] [Indexed: 01/31/2023]
Abstract
OBJECTIVE To determine the nationwide prevalence of primary dystonia, ataxia and hereditary spastic paraplegia (HSP) in Sweden. METHODS We extracted data on all patients who were registered in The National Patient Register (NPR) in Sweden (population 9.64 million) at least twice during five consecutive years with a diagnosis of primary dystonia, ataxia or HSP. We excluded patients with an additional diagnosis possibly indicating secondary causes, and determined the proportion of wrongly diagnosed patients at our own tertiary center by patient examination or chart review. We analyzed patients' age and disorder subtypes, geographical distribution of patients within Sweden and the country of birth of all patients. RESULTS Nationwide, we identified 4239 patients (31.6% male) with a diagnosis of primary dystonia. Of 347 patients with dystonia at our center, 20.2% may have had a different final diagnosis. Extrapolation of this uncertainty rate to the national population resulted in a prevalence for primary dystonia of 35.1/100,000. There were 672 patients (49.6% male) with ataxia in NPR, and the diagnostic uncertainty rate among 81 patients in our center was 13.6% (prevalence 6.0/100,000). HSP was diagnosed in 235 patients nationwide (52.3% male, prevalence 2.4/100,000). Patients were distributed relatively evenly throughout the country. The proportions of patients with these diagnoses who were born outside of Sweden were lower (8.0-12.7%) than the proportion of all Swedish residents born abroad (15.9%). CONCLUSIONS In this large, nationwide study, the prevalence of dystonia was high compared to previous studies, which partly may be explained by the high coverage of NPR.
Collapse
Affiliation(s)
- Clara Hellberg
- Lund University, Skane University Hospital, Department of Clinical Sciences Lund, Neurology, Lund, Sweden
| | - Erik Alinder
- Lund University, Skane University Hospital, Department of Clinical Sciences Lund, Neurology, Lund, Sweden
| | - Daniel Jaraj
- Lund University, Skane University Hospital, Department of Clinical Sciences Lund, Neurology, Lund, Sweden; Institute of Neuroscience and Physiology, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Andreas Puschmann
- Lund University, Skane University Hospital, Department of Clinical Sciences Lund, Neurology, Lund, Sweden.
| |
Collapse
|
25
|
Kim CY, Petersen MS, Eliasen EH, Defazio G, Greene P, Jinnah HA, Tijssen MAJ, Louis ED. Involuntary Thumb Flexion on Neurological Examination: An Unusual Form of Upper Limb Dystonia in the Faroe Islands. TREMOR AND OTHER HYPERKINETIC MOVEMENTS (NEW YORK, N.Y.) 2019; 9:tre-09-686. [PMID: 31440418 PMCID: PMC6702791 DOI: 10.7916/tohm.v0.686] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Accepted: 07/23/2019] [Indexed: 12/25/2022]
Abstract
Background The prevalence of dystonia varies worldwide. A prior report suggested a high prevalence of focal dystonia in the Faroese population, possibly reflecting a founder effect. During standardized neurological examination as part of an ongoing neuroepidemiologic study in the Faroe Islands, we noted an unusual phenomenon of thumb flexion during repetitive hand movements in a subset of subjects and sought to define its phenomenology. Methods We requested commentary from a panel of dystonia experts regarding the phenomenology of the movements. These experts reviewed the videotaped neurological examination. Results Among the experts, dystonia was the leading diagnosis. Alternate causes were considered, but deemed less likely. Discussion Diagnosis of dystonia requires careful clinical assessment and consideration of associated features. We report a novel form of dystonia, not previously described to our knowledge, in this isolated population. Further studies of dystonia prevalence in the Faroe Islands are merited to characterize its burden in this population and its specific clinical characteristics.
Collapse
Affiliation(s)
- Christine Y Kim
- Department of Neurology, Yale School of Medicine, Yale University, New Haven, CT, USA.,Center for Neuroepidemiology and Clinical Neurological Research, Yale School of Medicine, Yale University, New Haven, CT, USA
| | - Maria Skaalum Petersen
- Department of Occupational Medicine and Public Health, The Faroese Hospital System, Torshavn, FO.,Centre for Health Science, Faculty of Health Sciences, University of the Faroe Islands, Tórshavn, FO
| | - Eina H Eliasen
- Department of Occupational Medicine and Public Health, The Faroese Hospital System, Torshavn, FO
| | - Giovanni Defazio
- Department of Medical Sciences and Public Health, Neurology Unit, University of Cagliari, Cagliari, IT
| | - Paul Greene
- Mount Sinai School of Medicine, Movement Disorders Division, New York, NY, USA
| | - Hyder A Jinnah
- Departments of Neurology, Human Genetics and Pediatrics, Emory University, Atlanta, GA, USA
| | - Marina A J Tijssen
- Department of Neurology, University Medical Centre Groningen, University of Groningen, Groningen, NL
| | - Elan D Louis
- Department of Neurology, Yale School of Medicine, Yale University, New Haven, CT, USA.,Center for Neuroepidemiology and Clinical Neurological Research, Yale School of Medicine, Yale University, New Haven, CT, USA.,Department of Chronic Disease Epidemiology, Yale School of Public Health, Yale University, New Haven, CT, USA
| |
Collapse
|
26
|
Guiry S, Worthley A, Simonyan K. A separation of innate and learned vocal behaviors defines the symptomatology of spasmodic dysphonia. Laryngoscope 2018; 129:1627-1633. [PMID: 30582159 DOI: 10.1002/lary.27617] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Accepted: 09/17/2018] [Indexed: 01/29/2023]
Abstract
OBJECTIVE Spasmodic dysphonia (SD) is a neurological disorder characterized by involuntary spasms in the laryngeal muscles. It is thought to selectively affect speaking; other vocal behaviors remain intact. However, the patients' own perspective on their symptoms is largely missing, leading to partial understanding of the full spectrum of voice alterations in SD. METHODS A cohort of 178 SD patients rated their symptoms on the visual analog scale based on the level of effort required for speaking, singing, shouting, whispering, crying, laughing, and yawning. Statistical differences between the effort for speaking and the effort for other vocal behaviors were assessed using nonparametric Wilcoxon rank-sum tests within the overall SD cohort as well as within different subgroups of SD. RESULTS Speech production was found to be the most impaired behavior, ranking as the most effortful type of voice production in all SD patients. In addition, singing required nearly similar effort as speaking, ranking as the second most altered vocal behavior. Shouting showed a range of variability in its alterations, being especially difficult to produce for patients with adductor form, co-occurring voice tremor, late onset of disorder, and familial history of dystonia. Other vocal behaviors, such as crying, laughing, whispering, and yawning, were within the normal ranges across all SD patients. CONCLUSION Our findings widen the symptomatology of SD, which has predominantly been focused on selective speech impairments. We suggest that a separation of SD symptoms is rooted in selective aberrations of the neural circuitry controlling learned but not innate vocal behaviors. LEVEL OF EVIDENCE 4 Laryngoscope, 129:1627-1633, 2019.
Collapse
Affiliation(s)
- Samantha Guiry
- Department of Otolaryngology, Massachusetts Eye and Ear Infirmary, Boston, Massachusetts, U.S.A.,Department of Neurology, Massachusetts General Hospital, Boston, Massachusetts, U.S.A
| | - Alexis Worthley
- Department of Otolaryngology, Massachusetts Eye and Ear Infirmary, Boston, Massachusetts, U.S.A.,Department of Neurology, Massachusetts General Hospital, Boston, Massachusetts, U.S.A
| | - Kristina Simonyan
- Department of Otolaryngology, Massachusetts Eye and Ear Infirmary, Boston, Massachusetts, U.S.A.,Department of Neurology, Massachusetts General Hospital, Boston, Massachusetts, U.S.A.,Harvard Medical School, Boston, Massachusetts, U.S.A
| |
Collapse
|
27
|
Ortiz R, Scheperjans F, Mertsalmi T, Pekkonen E. The prevalence of adult-onset isolated dystonia in Finland 2007-2016. PLoS One 2018; 13:e0207729. [PMID: 30458031 PMCID: PMC6245745 DOI: 10.1371/journal.pone.0207729] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Accepted: 11/04/2018] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Dystonia is a group of chronic diseases, causing considerable physical and psychosocial stress to patients and health care expenses. We studied the prevalence of different dystonia types in Finland in the years 2007-2016. METHODS All patients with an ICD-10 code of dystonia were retrieved from the national care register. Average age-adjusted yearly prevalence was assessed for adult-onset isolated idiopathic or hereditary dystonia types from patient records from the Uusimaa and Pirkanmaa provinces. RESULTS 1316 patients were confirmed to have adult-onset isolated idiopathic or hereditary dystonia based on hospital records from two provinces. On average, the age-adjusted prevalence for all adult-onset dystonia was 405 per million and for cervical dystonia 304 per million. For other dystonia types the prevalence ranged from 1-33 per million. CONCLUSIONS Adult onset cervical dystonia was the most common type of dystonia with relatively high prevalence in Finland compared with other countries. The prevalence of other types of dystonia was similar compared with other European studies. The higher prevalence of cervical dystonia may be partially explained by the better coverage of patients in public health care, but genetic and exogenous factors might contribute to it.
Collapse
Affiliation(s)
- Rebekka Ortiz
- Department of Neurology, Helsinki University Hospital and Department of Clinical Neurosciences (Neurology), University of Helsinki, Helsinki, Finland
| | - Filip Scheperjans
- Department of Neurology, Helsinki University Hospital and Department of Clinical Neurosciences (Neurology), University of Helsinki, Helsinki, Finland
| | - Tuomas Mertsalmi
- Department of Neurology, Helsinki University Hospital and Department of Clinical Neurosciences (Neurology), University of Helsinki, Helsinki, Finland
| | - Eero Pekkonen
- Department of Neurology, Helsinki University Hospital and Department of Clinical Neurosciences (Neurology), University of Helsinki, Helsinki, Finland
| |
Collapse
|
28
|
Beck RB, Kneafsey SL, Narasimham S, O’Riordan S, Isa T, Hutchinson M, Reilly RB. Reduced Frequency of Ipsilateral Express Saccades in Cervical Dystonia: Probing the Nigro-Tectal Pathway. Tremor Other Hyperkinet Mov (N Y) 2018; 8:592. [PMID: 30510845 PMCID: PMC6262171 DOI: 10.7916/d8864094] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Accepted: 10/02/2018] [Indexed: 12/01/2022] Open
Abstract
Background Cervical dystonia is a hyperkinetic movement disorder of unknown cause. Symptoms of cervical dystonia have been induced in animals in which the integrity of the nigro-tectal pathway is disrupted, resulting in reduced inhibition of the deep layers of the superior colliculus. This same pathway is believed to play a critical role in saccade generation, particularly visually guided, express saccades. It was hypothesized that individuals with cervical dystonia would present with a higher frequency of express saccades and more directional errors. Methods Eight individuals with cervical dystonia and 11 age- and sex-matched control participants performed three saccadic paradigms: pro-saccade, gap, and anti-saccade (120 trials per task). Eye movements were recorded using electro-oculography. Results Mean saccadic reaction times were slower in the cervical dystonia group (only statistically significant in the anti-saccade task, F(1, 35) = 4.76, p = 0.036); participants with cervical dystonia produced fewer directional errors (mean 14% vs. 22%) in the anti-saccade task; and had similar frequencies of express saccades in the gap task relative to our control population (chi-square = 1.13, p = 0.287). All cervical dystonia participants had lower frequencies of express saccades ipsilateral to their dystonic side (the side to which their head turns), (chi-square = 3.57, p = 0.059). Discussion The finding of slower saccadic reaction times in cervical dystonia does not support the concept of reduced inhibition in the nigro-tectal pathway. Further research is required to confirm the observed relationship between the lateralization of lower frequencies of express saccades and direction of head rotation in cervical dystonia.
Collapse
Affiliation(s)
- Rebecca B. Beck
- School of Engineering, Trinity College Dublin, The University of Dublin, Dublin, IE
- Trinity Centre for BioEngineering, Trinity College Dublin, The University of Dublin, IE
| | - Simone L. Kneafsey
- School of Engineering, Trinity College Dublin, The University of Dublin, Dublin, IE
- Trinity Centre for BioEngineering, Trinity College Dublin, The University of Dublin, IE
| | - Shruti Narasimham
- School of Engineering, Trinity College Dublin, The University of Dublin, Dublin, IE
- Trinity Centre for BioEngineering, Trinity College Dublin, The University of Dublin, IE
| | - Sean O’Riordan
- Department of Neurology, St. Vincent’s University Hospital, Dublin, IE
- School of Medicine and Medical Sciences, University College DublinIE
| | - Tadashi Isa
- Department of Neuroscience, Kyoto University, Kyoto, JP
| | - Michael Hutchinson
- Department of Neurology, St. Vincent’s University Hospital, Dublin, IE
- School of Medicine and Medical Sciences, University College DublinIE
| | - Richard B. Reilly
- School of Engineering, Trinity College Dublin, The University of Dublin, Dublin, IE
- Trinity Centre for BioEngineering, Trinity College Dublin, The University of Dublin, IE
- School of Medicine, Trinity College Dublin, The University of Dublin, Dublin, IE
| |
Collapse
|
29
|
Abstract
Dystonia is a neurological disorder characterized by involuntary, repetitive movements. Although the precise mechanisms of dystonia development remain unknown, the diversity of its clinical phenotypes is thought to be associated with multifactorial pathophysiology, which is linked not only to alterations of brain organization, but also environmental stressors and gene mutations. This chapter will present an overview of the pathophysiology of isolated dystonia through the lens of applications of major neuroimaging methodologies, with links to genetics and environmental factors that play a prominent role in symptom manifestation.
Collapse
|
30
|
Abstract
Dystonia is a neurological condition characterized by abnormal involuntary movements or postures owing to sustained or intermittent muscle contractions. Dystonia can be the manifesting neurological sign of many disorders, either in isolation (isolated dystonia) or with additional signs (combined dystonia). The main focus of this Primer is forms of isolated dystonia of idiopathic or genetic aetiology. These disorders differ in manifestations and severity but can affect all age groups and lead to substantial disability and impaired quality of life. The discovery of genes underlying the mendelian forms of isolated or combined dystonia has led to a better understanding of its pathophysiology. In some of the most common genetic dystonias, such as those caused by TOR1A, THAP1, GCH1 and KMT2B mutations, and idiopathic dystonia, these mechanisms include abnormalities in transcriptional regulation, striatal dopaminergic signalling and synaptic plasticity and a loss of inhibition at neuronal circuits. The diagnosis of dystonia is largely based on clinical signs, and the diagnosis and aetiological definition of this disorder remain a challenge. Effective symptomatic treatments with pharmacological therapy (anticholinergics), intramuscular botulinum toxin injection and deep brain stimulation are available; however, future research will hopefully lead to reliable biomarkers, better treatments and cure of this disorder.
Collapse
|
31
|
O'Connell Ferster AP, Sataloff RT, Shewokis PA, Hu A. Socioeconomic Variables of Patients with Spasmodic Dysphonia: A Preliminary Study. J Voice 2018; 32:479-483. [DOI: 10.1016/j.jvoice.2017.07.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Revised: 07/19/2017] [Accepted: 07/21/2017] [Indexed: 10/18/2022]
|
32
|
Hu A, Hillel A, Zhao W, Meyer T. Anxiety and depression in spasmodic dysphonia patients. World J Otorhinolaryngol Head Neck Surg 2018; 4:110-116. [PMID: 30101219 PMCID: PMC6074012 DOI: 10.1016/j.wjorl.2018.04.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Accepted: 04/17/2018] [Indexed: 12/01/2022] Open
Abstract
Objective/Hypothesis Experts used to believe that spasmodic dysphonia (SD) was a psychogenic disorder. Although SD is now established as a neurological disorder, the rates of co-morbid anxiety and depression range from 7.1% to 62%. Our objective was to study the prevalence and risk factors associated with these mood disorders in SD patients. Study design Retrospective. Methods SD patients who presented for botulinum toxin injections were recruited. Demographic data, Hospital Anxiety and Depression Scale (HADS), Voice Handicap Index-10 (VHI-10), General Self-Efficacy scale (GSES), Disease Specific Self-Efficacy in Spasmodic Dysphonia scale (DSSE), and Consensus Auditory Perceptual Evaluation of Voice (CAPE-V) were collected. Results One hundred and forty two patients (age (59.2 ± 13.6) years, 25.4% male) had VHI-10 of 26.3 ± 6.9 (mean ± standard deviation), GSES 33.2 ± 5.8, CAPE-V 43.9 ± 20.9, HADS anxiety 6.7 ± 3.7, and HADS depression 3.6 ± 2.8. About 19 (13.4%) and 4 (2.8%) had symptoms of anxiety and depression respectively. Final linear regression model for HADS anxiety (R2 = 32.90%) showed that patients who were less likely to have anxiety symptoms were older age (p < 0.001), male (p = 0.002), have higher GSES (p < 0.001) and lower VHI-10 (p = 0.004). Final linear regression model for HADS depression score (R2 = 34.42%) showed that patients who were less likely to have depressive symptoms had high DSSES (p < 0.001). Conclusions Prevalence of anxiety (13.4%) and depression (2.8%) in SD were lower than previously reported in the literature. Risk factors for anxiety were: younger age, female gender, lower general self-efficacy, and higher perceived vocal handicap. The main risk factor for depression was lower disease specific self-efficacy.
Collapse
Affiliation(s)
- Amanda Hu
- Division of Otolaryngology - Head & Neck Surgery, Department of Surgery, University of British Columbia, Vancouver, Canada
| | - Al Hillel
- Department of Otolaryngology - Head & Neck Surgery, University of Washington, Seattle, WA, USA
| | - Wei Zhao
- Albert Einstein College of Medicine, Bronx, NY, USA
| | - Tanya Meyer
- Department of Otolaryngology - Head & Neck Surgery, University of Washington, Seattle, WA, USA
| |
Collapse
|
33
|
Williams L, McGovern E, Kimmich O, Molloy A, Beiser I, Butler JS, Molloy F, Logan P, Healy DG, Lynch T, Walsh R, Cassidy L, Moriarty P, Moore H, McSwiney T, Walsh C, O'Riordan S, Hutchinson M. Epidemiological, clinical and genetic aspects of adult onset isolated focal dystonia in Ireland. Eur J Neurol 2016; 24:73-81. [DOI: 10.1111/ene.13133] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Accepted: 08/09/2016] [Indexed: 02/06/2023]
Affiliation(s)
- L. Williams
- Department of Neurology; St Vincent's University Hospital; Dublin Ireland
- School of Medicine and Medical Sciences; University College Dublin; Dublin Ireland
| | - E. McGovern
- Department of Neurology; St Vincent's University Hospital; Dublin Ireland
- School of Medicine and Medical Sciences; University College Dublin; Dublin Ireland
| | - O. Kimmich
- Department of Neurology; St Vincent's University Hospital; Dublin Ireland
- School of Medicine and Medical Sciences; University College Dublin; Dublin Ireland
| | - A. Molloy
- Department of Neurology; St Vincent's University Hospital; Dublin Ireland
- School of Medicine and Medical Sciences; University College Dublin; Dublin Ireland
| | - I. Beiser
- Department of Neurology; St Vincent's University Hospital; Dublin Ireland
- School of Medicine and Medical Sciences; University College Dublin; Dublin Ireland
| | - J. S. Butler
- Trinity Centre for Bioengineering; Dublin and School of Mathematical Sciences; Dublin Institute of Technology; Dublin Ireland
| | | | - P. Logan
- Beaumont Hospital; Dublin Ireland
| | | | - T. Lynch
- Mater Misericordiae University Hospital; Dublin Ireland
| | - R. Walsh
- Adelaide and Meath Hospital; Dublin Ireland
| | - L. Cassidy
- Royal Victoria Eye and Ear Hospital; Dublin Ireland
| | - P. Moriarty
- Royal Victoria Eye and Ear Hospital; Dublin Ireland
| | - H. Moore
- Cork University Hospital; Cork Ireland
| | | | - C. Walsh
- Departments of Statistics; Trinity College Dublin; University of Limerick; Limerick Ireland
| | - S. O'Riordan
- Department of Neurology; St Vincent's University Hospital; Dublin Ireland
- School of Medicine and Medical Sciences; University College Dublin; Dublin Ireland
| | - M. Hutchinson
- Department of Neurology; St Vincent's University Hospital; Dublin Ireland
- School of Medicine and Medical Sciences; University College Dublin; Dublin Ireland
| |
Collapse
|
34
|
Liquid-type Botulinum Toxin Type A in Adductor Spasmodic Dysphonia: A Prospective Pilot Study. J Voice 2016; 31:378.e19-378.e24. [PMID: 27520509 DOI: 10.1016/j.jvoice.2016.07.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2016] [Revised: 07/07/2016] [Accepted: 07/08/2016] [Indexed: 11/23/2022]
Abstract
OBJECTIVES Botulinum toxin (BTX) has been widely used to treat adductor spasmodic dysphonia (ADSD). Most commercially available forms of BTX require reconstitution before use, which may increase the risk of contamination and requires careful titration. Recently, a liquid-type BTX type A (BTX-A) has been developed, which should simplify the procedure and enhance its efficacy. Herein, we present a prospective pilot study to investigate the efficacy and safety of liquid-type BTX-A in the treatment of ADSD. METHODS Twenty-six consecutive liquid-type BTX-A injections were performed in 12 patients with ADSD. We included as a control group 34 consecutive patients with ADSD who had previously undergone 52 vocal fold injection procedures with freeze-dried-type BTX-A. RESULTS All patients in both groups had improvement of symptoms related to ADSD and period of normal voice. Most patients experienced breathiness, and the onset time, the peak response time, and the duration of breathiness were similar in both groups. The duration of effect (days) was 96.96 ± 18.91 and 77.38 ± 18.97 in the freeze-dried-type and the liquid-type groups, and the duration of benefit (days) was 80.02 ± 18.24 and 62.69 ± 19.73 in the freeze-dried-type and the liquid-type groups. To compare the efficacy between the freeze-dried-type and the liquid-type BTX-A, the sessions of the unilateral vocal fold injection were included and were categorized as group A (1 ~ 2 units BTX-A) and group B (2 ~ 3 units BTX-A), according to the dose per vocal fold. There was no significant difference of effect time between freeze-dried-type and liquid-type BTX-A groups. No adverse events related to BTX or vocal fold injection were reported. CONCLUSIONS Liquid-type BTX-A is safe and effective for the treatment of spasmodic dysphonia. With the advantages of simple preparation, storage, and reuse and animal protein-free constituents, liquid-type BTX-A may be a good option in the treatment of spasmodic dysphonia.
Collapse
|
35
|
Zhang Y, Zhang YC, Sheng YJ, Chen XF, Wang CS, Ma Q, Chen HB, Yu LF, Mao CJ, Xiong KP, Luo WF, Liu CF. Sonographic Alteration of Basal Ganglia in Different Forms of Primary Focal Dystonia: A Cross-sectional Study. Chin Med J (Engl) 2016; 129:942-5. [PMID: 27064039 PMCID: PMC4831529 DOI: 10.4103/0366-6999.179792] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Background: Few studies have addressed whether abnormalities in the lenticular nucleus (LN) are characteristic transcranial sonography (TCS) echo features in patients with primary dystonia. This study aimed to explore alterations in the basal ganglia in different forms of primary focal dystonia. Methods: cross-sectional observational study was performed between December 2013 and December 2014 in 80 patients with different forms of primary focal dystonia and 55 neurologically normal control subjects. TCS was performed in patients and control subjects. Multiple comparisons of multiple rates were used to compare LN hyperechogenicity ratios between control and patient groups. Results: Thirteen individuals were excluded due to poor temporal bone windows, and two subjects were excluded due to disagreement in evaluation by sonologists. Totally, 70 patients (cervical dystonia, n = 30; blepharospasm, n = 30; oromandibular dystonia, n = 10) and 50 normal controls were included in the final analysis. LN hyperechogenicity was observed in 51% (36/70) of patients with primary focal dystonia, compared with 12% (6/50) of controls (P < 0.001). Substantia nigra hyperechogenicity did not differ between the two groups. LN hyperechogenicity was observed in 73% (22/30) of patients with cervical dystonia, a greater prevalence than in patients with blepharospasm (33%, 10/30, P = 0.002) and oromandibular dystonia (40%, 4/10, P = 0.126). LN hyperechogenicity was more frequently observed in patients with cervical dystonia compared with controls (73% vs. 12%, P < 0.001); however, no significant difference was detected in patients with blepharospasm (33% vs. 12%, P = 0.021) or oromandibular dystonia (40% vs. 12%, P = 0.088). Conclusions: LN hyperechogenicity is more frequently observed in patients with primary focal dystonia than in controls. It does not appear to be a characteristic TCS echo feature in patients with blepharospasm or oromandibular dystonia.
Collapse
Affiliation(s)
| | - Ying-Chun Zhang
- Department of Ultrasound, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215004, China
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
36
|
Molloy A, Williams L, Kimmich O, Butler JS, Beiser I, McGovern E, O'Riordan S, Reilly RB, Walsh C, Hutchinson M. Sun exposure is an environmental factor for the development of blepharospasm. J Neurol Neurosurg Psychiatry 2016; 87:420-4. [PMID: 25904812 DOI: 10.1136/jnnp-2014-310266] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/29/2014] [Accepted: 04/01/2015] [Indexed: 11/04/2022]
Abstract
BACKGROUND Adult-onset isolated focal dystonia may present with various phenotypes including blepharospasm and cervical dystonia. Although inherited in an autosomal dominant manner with a markedly reduced penetrance, environmental factors are considered important in disease penetrance and expression. We observed a marked variation by latitude in the reports of the frequency of patients with blepharospasm relative to those with cervical dystonia; we hypothesised that sun exposure is an environmental risk factor for the development of blepharospasm in genetically susceptible individuals. METHODS From published clinic cohorts and epidemiological reports, the ratio of the number of cases of blepharospasm to cervical dystonia (phenotype case ratio) at each study site was analysed with regard to latitude and measures of annual insolation. Meta-regression analyses of the phenotype case ratio to these environmental factors were performed. RESULTS The phenotype case ratio in 15 eligible study sites over 41° of latitude demonstrated a statistically significant inverse association with latitude (p=0.0004, R(2)=53.5%). There were significant positive associations between the phenotype case ratio and quarter-one (January-March) insolation (p=0.0005, R(2)=53%) and average annual insolation (p=0.003, R(2)=40%). CONCLUSION The increase in the blepharospasm: cervical dystonia case ratio with decreasing latitude and increasing insolation suggests that sunlight exposure is an environmental risk factor for the development of blepharospasm (rather than cervical dystonia) in individuals genetically susceptible to adult-onset dystonia.
Collapse
Affiliation(s)
- Anna Molloy
- Department of Neurology, St. Vincent's University Hospital, Dublin, Ireland School of Medicine and Medical Science, University College Dublin, Dublin, Ireland
| | - Laura Williams
- Department of Neurology, St. Vincent's University Hospital, Dublin, Ireland School of Medicine and Medical Science, University College Dublin, Dublin, Ireland
| | - Okka Kimmich
- Department of Neurology, St. Vincent's University Hospital, Dublin, Ireland School of Medicine and Medical Science, University College Dublin, Dublin, Ireland
| | - John S Butler
- Trinity Centre for Bioengineering, Trinity College Dublin, Dublin, Ireland
| | - Ines Beiser
- Department of Neurology, St. Vincent's University Hospital, Dublin, Ireland School of Medicine and Medical Science, University College Dublin, Dublin, Ireland
| | - Eavan McGovern
- Department of Neurology, St. Vincent's University Hospital, Dublin, Ireland School of Medicine and Medical Science, University College Dublin, Dublin, Ireland
| | - Sean O'Riordan
- Department of Neurology, St. Vincent's University Hospital, Dublin, Ireland School of Medicine and Medical Science, University College Dublin, Dublin, Ireland
| | - Richard B Reilly
- Trinity Centre for Bioengineering, Trinity College Dublin, Dublin, Ireland
| | - Cathal Walsh
- Department of Statistics, Trinity College Dublin, Dublin, Ireland Department of Mathematics and Statistics, University of Limerick, Limerick, Ireland
| | - Michael Hutchinson
- Department of Neurology, St. Vincent's University Hospital, Dublin, Ireland School of Medicine and Medical Science, University College Dublin, Dublin, Ireland
| |
Collapse
|
37
|
Joensen P. High prevalence of primary focal dystonia in the Faroe Islands. Acta Neurol Scand 2016; 133:55-60. [PMID: 26041438 DOI: 10.1111/ane.12438] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/24/2015] [Indexed: 11/30/2022]
Abstract
OBJECTIVE There are no previous studies undertaken about primary focal dystonia in the Faroe Islands. The aim of this study was to establish the prevalence of these diseases in the Faroese population. METHODS Patients were ascertained and registered prospectively from January 1, 1994, through 2013 when they were examined at the Neurological Clinic of the Faroese National Hospital or at a private neurological practice, which together constitutes all the available neurological services in the Faroe Islands. RESULT On January 1, 2014, there were 29 individuals within the entire Faroese population of 48,100 with primary focal dystonia: 23 with torticollis, four with writer's cramp, one with oromandibular dystonia, and one with laryngeal dystonia; no one had blepharospasm. The prevalence of primary focal dystonia was 602 per million (395-873) (95% confidence limit). The most common subtype was cervical dystonia with a prevalence of 478 (332-728) per million. CONCLUSION The study yielded that (i) the prevalence of primary focal dystonia of 602 (395-873) per million is far higher in the Faroe Islands than that revealed in most other regions studied and (ii) the prevalence of the cervical dystonia subtype is far more common than elsewhere with the highest prevalence of 478 (332-728), which is higher than described in any previously published survey. As the study is serviced-based, the result may underestimate actual occurrence; thus, prevalence rates may be even higher.
Collapse
Affiliation(s)
- P. Joensen
- Department of Medicine and Neurophysiology; Laboratory National Hospital of the Faroe Islands; Torshavn Faroe Islands
| |
Collapse
|
38
|
Hu A, Hillel A, Meyer T. Factors Associated With Patient-perceived Hoarseness in Spasmodic Dysphonia Patients. J Voice 2015; 30:769.e23-769.e26. [PMID: 26704415 DOI: 10.1016/j.jvoice.2015.11.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Accepted: 11/10/2015] [Indexed: 11/16/2022]
Abstract
OBJECTIVES/HYPOTHESIS The American Academy of Otolaryngology-Head and Neck Surgery Clinical Practice Guidelines on Hoarseness distinguishes between hoarseness, which is a symptom perceived by the patient, and dysphonia, which is a diagnosis made by the clinician. Our objective was to determine factors that are associated with patient-perceived hoarseness in spasmodic dysphonia (SD) patients. STUDY DESIGN Retrospective study. METHODS Adductor SD patients who presented for botulinum toxin injections from September 2011 to June 2012 were recruited. The main outcome variable, Voice Handicap Index-10 (VHI-10), was used to quantify patient-perceived hoarseness. Clinical data, Hospital Anxiety and Depression Scale (HADS), and VHI-10 were collected. Clinician-perceived dysphonia was measured by a speech-language pathologist with Consensus Auditory Perceptual Evaluation of Voice (CAPE-V). Statistical analysis included univariate analyses and multiple linear regression. RESULTS One hundred thirty-nine SD patients had VHI-10 score of 26.0 ± 7.2 (mean ± standard deviation), disease duration of 10.5 + 7.0 years, CAPE-V overall score of 43.2 ± 21.8, HADS anxiety score of 6.7 ± 3.8, and HADS depression score of 3.6 ± 2.8. In univariate analyses, there were positive correlations (P < 0.05) between VHI-10 and female gender, CAPE-V overall, older age, HADS anxiety, and depression. There was no correlation with professional voice use and disease duration. In multiple linear regression (R2 = 0.178, P < 0.001), age, HADS anxiety, female gender, and CAPE-V were significant. CONCLUSIONS Older age, higher anxiety levels, female gender, and clinician-perceived dysphonia are associated with higher levels of patient-perceived hoarseness in SD patients. Hoarseness is a very personal symptom. Multiple factors determine its self-perception.
Collapse
Affiliation(s)
- Amanda Hu
- Department of Otolaryngology-Head & Neck Surgery, Drexel University College of Medicine, Philadelphia, Pennsylvania.
| | - Al Hillel
- Department of Otolaryngology-Head & Neck Surgery, University of Washington, Seattle, Washington
| | - Tanya Meyer
- Department of Otolaryngology-Head & Neck Surgery, University of Washington, Seattle, Washington
| |
Collapse
|
39
|
Wang L, Chen Y, Hu B, Hu X. Late-onset primary dystonia in Zhejiang province of China: a service-based epidemiological study. Neurol Sci 2015; 37:111-116. [DOI: 10.1007/s10072-015-2366-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2015] [Accepted: 08/08/2015] [Indexed: 12/17/2022]
|
40
|
Pain Relief in Cervical Dystonia with Botulinum Toxin Treatment. Toxins (Basel) 2015; 7:2321-35. [PMID: 26110508 PMCID: PMC4488705 DOI: 10.3390/toxins7062321] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2015] [Revised: 05/31/2015] [Accepted: 06/15/2015] [Indexed: 01/03/2023] Open
Abstract
Dystonia is a neurological disorder characterized by intermittent or sustained muscle contractions that cause abnormal, usually repetitive, movements and postures. Dystonic movements can be tremulous and twisting and often follow a pattern. They are frequently associated with overflow muscle activation and may be triggered or worsened by voluntary action. Most voluntary muscles can be affected and, in the case of the neck muscles, the condition is referred to as cervical dystonia (CD), the most common form of dystonia. The high incidence of pain distinguishes CD from other focal dystonias and contributes significantly to patient disability and low quality of life. Different degrees of pain in the cervical region are reported by more than 60% of patients, and pain intensity is directly related to disease severity. Botulinum toxin (BoNT) is currently considered the treatment of choice for CD and can lead to an improvement in pain and dystonic symptoms in up to 90% of patients. The results for BoNT/A and BoNT/B are similar. The complex relationship between pain and dystonia has resulted in a large number of studies and more comprehensive assessments of dystonic patients. When planning the application of BoNT, pain should be a key factor in the choice of muscles and doses. In conclusion, BoNT is highly effective in controlling pain, and its analgesic effect is sustained for a long time in most CD patients.
Collapse
|
41
|
Alcohol responsiveness in laryngeal dystonia: a survey study. J Neurol 2015; 262:1548-56. [PMID: 25929664 DOI: 10.1007/s00415-015-7751-2] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2015] [Revised: 04/13/2015] [Accepted: 04/13/2015] [Indexed: 10/23/2022]
Abstract
Laryngeal dystonia (LD) is a task-specific focal dystonia of unknown pathophysiology affecting speech production. We examined the demographics of anecdotally reported alcohol use and its effects on LD symptoms using an online survey based on Research Electronic Data Capture (REDCap™) and National Spasmodic Dysphonia Association's patient registry. From 641 participants, 531 were selected for data analysis, and 110 were excluded because of unconfirmed diagnosis. A total of 406 patients (76.5 %) had LD and 125 (23.5 %) had LD and voice tremor (LD/VT). The consumption of alcohol was reported by 374 LD (92.1 %) and 109 LD/VT (87.2 %) patients. Improvement of voice symptoms after alcohol ingestion was noted by 227 LD (55.9 % of all patients) and 73 LD/VT (58.4 %), which paralleled the improvement observed by patient's family and/or friends in 214 LD (57.2 %) and 69 LD/VT (63.3 %) patients. The benefits lasted 1-3 h in both groups with the maximum effect after 2 drinks in LD patients (p = 0.002), whereas LD/VT symptoms improved independent of the consumed amount (p = 0.48). Our data suggest that isolated dystonic symptoms, such as in LD, are responsive to alcohol intake and this responsiveness is not attributed to the presence of VT, which is known to have significant benefits from alcohol ingestion. Alcohol may modulate the pathophysiological mechanisms underlying abnormal neurotransmission of γ-aminobutyric acid (GABA) in dystonia and as such provide new avenues for novel therapeutic options in these patients.
Collapse
|
42
|
Xu Z, Li G, Feng X. Exploration on the underlying mechanism of female predominance in spasmodic dysphonia: an anatomical study of nodose ganglion in rats. Indian J Otolaryngol Head Neck Surg 2014; 66:26-30. [PMID: 24605297 DOI: 10.1007/s12070-012-0572-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2012] [Accepted: 08/24/2012] [Indexed: 11/29/2022] Open
Abstract
To study the gender differences of amount of neurons in the nodose ganglions of rats. Fourteen Sprague-Dawley rats (7 males and 7 females) were selected. Bilateral nodose ganglions were dissected and serial sections of nodose ganglion were cut in a cryostat, followed by Cresyl-violet staining for neurons. Eight to ten consecutive sections from mid-portion of each nodose ganglion sample, which represent the most neuron number per section, were counted and averaged. Gender difference in the amount of neurons in the nodose ganglions was compared. No gender difference of neuron numbers was found in either side of nodose ganglion (p > 0.05). However, average neuron number of nodose ganglions on the left side of male (654 ± 60) and female (616 ± 37) were significantly more than that on the right side of male (470 ± 22) and female (453 ± 40) respectively (p < 0.05). There is no gender difference in total neuron number of nodose ganglions between male and female rat. However, the neuron number in the left nodose ganglion is greater than that in the right one. The difference may be due to the fact that left and right nodose ganglion is receiving different visceral sensory impulses separately, which is associated with different physiological functions. Further work should be carried out with retrograde tracing on neurons of nodose ganglions in an animal model, which are directly related to laryngeal sensory transmission, in order to determine the gender difference in the neuron number and morphology related to laryngeal functions.
Collapse
Affiliation(s)
- Zengrui Xu
- Department of Otolaryngology, Tianjin Fourth Central Hospital, Tianjin, People's Republic of China ; Department of Otolaryngology, Wake Forest School of Medicine, Winston-Salem, NC USA
| | - Ge Li
- Center for Cancer Genomic and Center for Human Genomic, Wake Forest School of Medicine, Winston-Salem, NC USA
| | - Xin Feng
- Department of Otolaryngology, Wake Forest School of Medicine, Winston-Salem, NC USA
| |
Collapse
|
43
|
Defazio G, Jankovic J, Giel JL, Papapetropoulos S. Descriptive epidemiology of cervical dystonia. TREMOR AND OTHER HYPERKINETIC MOVEMENTS (NEW YORK, N.Y.) 2013; 3. [PMID: 24255801 PMCID: PMC3822401 DOI: 10.7916/d80c4tgj] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/27/2013] [Accepted: 09/22/2013] [Indexed: 12/13/2022]
Abstract
Background Cervical dystonia (CD), the most common form of adult-onset focal dystonia, has a heterogeneous clinical presentation with variable clinical features, leading to difficulties and delays in diagnosis. Owing to the lack of reviews specifically focusing on the frequency of primary CD in the general population, we performed a systematic literature search to examine its prevalence/incidence and analyze methodological differences among studies. Methods We performed a systematic literature search to examine the prevalence data of primary focal CD. Sixteen articles met our methodological criteria. Because the reported prevalence estimates were found to vary widely across studies, we analyzed methodological differences and other factors to determine whether true differences exist in prevalence rates among geographic areas (and by gender and age distributions), as well as to facilitate recommendations for future studies. Results Prevalence estimates ranged from 20–4,100 cases/million. Generally, studies that relied on service-based and record-linkage system data likely underestimated the prevalence of CD, whereas population-based studies suffered from over-ascertainment. The more methodologically robust studies yielded a range of estimates of 28–183 cases/million. Despite the varying prevalence estimates, an approximate 2:1 female:male ratio was consistent among many studies. Three studies estimated incidence, ranging from 8–12 cases/million person-years. Discussion Although several studies have attempted to estimate the prevalence and incidence of CD, there is a need for additional well-designed epidemiological studies on primary CD that include large populations; use defined CD diagnostic criteria; and stratify for factors such as age, gender, and ethnicity.
Collapse
Affiliation(s)
- Giovanni Defazio
- Department of Basic Medical Sciences, Neuroscience and Sensory Organs, University of Bari, I-70124, Bari, Italy
| | | | | | | |
Collapse
|
44
|
Meyer TK, Hu A, Hillel AD. Voice disorders in the workplace: Productivity in spasmodic dysphonia and the impact of botulinum toxin. Laryngoscope 2013; 123 Suppl 6:S1-14. [DOI: 10.1002/lary.24292] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Revised: 06/13/2013] [Accepted: 06/13/2013] [Indexed: 11/09/2022]
Affiliation(s)
- Tanya K. Meyer
- Department of Otolaryngology; University of Washington; Seattle Washington
| | - Amanda Hu
- Department of Otolaryngology; Drexel University; Philadelphia Pennsylvania U.S.A
| | - Allen D. Hillel
- Department of Otolaryngology; University of Washington; Seattle Washington
| |
Collapse
|
45
|
Hu A, Isetti D, Hillel AD, Waugh P, Comstock B, Meyer TK. Disease-specific self-efficacy in spasmodic dysphonia patients. Otolaryngol Head Neck Surg 2013; 148:450-5. [PMID: 23300221 DOI: 10.1177/0194599812472319] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVE Self-efficacy (SE) is an optimistic self-belief that one can perform a novel task. This concept involves empowerment, self-esteem, and adaptation to a stressful situation. SE is a strong predictor of health behaviors. Our objectives were to study SE in spasmodic dysphonia (SD) and to develop a disease-specific SE-SD scale. STUDY DESIGN Prospective study. SETTING Academic hospital. SUBJECT AND METHODS Disease-specific SE-SD items were developed with laryngologists, speech pathologists, and SD patients. These items, General SE Scale, Voice Handicap Index-10 (VHI-10), Consensus Auditory Perceptual Evaluation of Voice (CAPE-V), and Hospital Anxiety and Depression Scale (HADS), were administered to SD patients who presented for botulinum toxin injections. RESULTS One hundred forty-five SD patients (mean age 59.5 ± 13.6 years) had a general SE score (Cronbach's α = 0.894) of 33.4 ± 5.2 out of 40. This was negatively correlated with HADS-A (r = -0.42, P < 0.001) and HADS-D (r = -0.42, P < .001), but not correlated with VHI-10 (r = -0.098, P = .243) and CAPE-V (r = -0.047, P = .57). Factor analysis selected 8 items from the general SE scale and 5 disease-specific SE-SD items to generate a 13-item disease-specific SE-SD scale (Cronbach's α = 0.907). Disease-specific SE-SD score was 42.1 ± 6.9 out of 52 and was negatively correlated with VHI-10 (r = -0.19, P = .005), HADS-A (r = -0.43, P < .001), and HADS-D (r = -0.57, P < .001), but not correlated with CAPE-V (r = -0.024, P = .60). CONCLUSION SD patients established on botulinum toxin injections have high degrees of general and disease-specific SE. Patients with higher SE-SD demonstrate lower vocal handicap and lower levels of anxiety and depression. A 13-item disease-specific SE-SD scale has been developed.
Collapse
Affiliation(s)
- Amanda Hu
- Department of Otolaryngology-Head & Neck Surgery, Drexel University College of Medicine, Philadelphia, Pennsylvania 19102, USA.
| | | | | | | | | | | |
Collapse
|
46
|
Ushe M, Perlmutter JS. Oromandibular and lingual dystonia associated with spinocerebellar ataxia type 8. Mov Disord 2012; 27:1741-2. [PMID: 23283653 PMCID: PMC3539208 DOI: 10.1002/mds.25295] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2012] [Revised: 10/02/2012] [Accepted: 10/04/2012] [Indexed: 12/18/2022] Open
Affiliation(s)
- Mwiza Ushe
- Department of Neurology, Washington University School of Medicine, St. Louis, MO
| | - Joel S. Perlmutter
- Department of Neurology, Washington University School of Medicine, St. Louis, MO
- Department of Radiology, Washington University School of Medicine, St. Louis, MO
- Department of Anatomy and Neurobiology, Washington University School of Medicine, St. Louis, MO
- Programs in Physical Therapy, Washington University School of Medicine, St. Louis, MO
- Department of Occupational Therapy, Washington University School of Medicine, St. Louis, MO
| |
Collapse
|
47
|
Abstract
Dystonias of the oral, pharyngeal and laryngeal muscles are potential causes of deglutitive, respiratory and communicative disorders. In addition to functional deficits such as dysphagia, dysarthria and dysphonia, social disadvantages may arise from the visible or audible manifestations. Treatment with botulinum toxin offers symptomatic and temporary therapeutic effects. Examples of applications in oromandibular dystonia, palatoclonus, dysphagia and laryngeal dystonia (e.g., spasmodic dysphonia) are described.
Collapse
|
48
|
Steeves TD, Day L, Dykeman J, Jette N, Pringsheim T. The prevalence of primary dystonia: A systematic review and meta-analysis. Mov Disord 2012; 27:1789-96. [DOI: 10.1002/mds.25244] [Citation(s) in RCA: 223] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2012] [Revised: 07/14/2012] [Accepted: 09/20/2012] [Indexed: 01/21/2023] Open
|
49
|
Wang L, Hu X, Liu C, Wu Y, Wang C, Wang Z, Chen J. Botulinum toxin clinic-based epidemiologic survey of adults with primary dystonia in East china. J Mov Disord 2012; 5:9-13. [PMID: 24868406 PMCID: PMC4027674 DOI: 10.14802/jmd.12003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2012] [Revised: 04/30/2012] [Accepted: 04/30/2012] [Indexed: 11/24/2022] Open
Abstract
Background and Purpose: Primary focal or segmental dystonia is a rare clinical condition. The clinical features of dystonia have not been evaluated in China. We performed a study to investigate the epidemiology of primary dystonia and its clinical variants in an adult population. Methods: A Botulinum Toxin Clinic-based study was conducted in the period 18 May through 8 October 2010 in East China. We identified 523 dystonia patients from the Movement disorders and Botulinum Toxin clinic Cases. Results: The most common focal dystonia were blepharospasm (59%), cervical dystonia (35%), limb dystonia (3%), oromandibular dystonia (2%) and laryngeal dystonia (1%). Males with primary dystonia were noted to have earlier age of onset. A female predominance was noted for most of the primary dystonias with a male to female ratio (M : F) ranging from 1 : 1.48 to 1 : 3. Conclusions: The epidemiological features of dystonia in East China we collected were similar to the report in Japan which contrasts partly with that reported in Europe.
Collapse
Affiliation(s)
- Li Wang
- Department of Neurology, Sir Run Run Shaw Hospital of Zhejiang University School of Medicine, Zhejiang, China
| | - Xingyue Hu
- Department of Neurology, Sir Run Run Shaw Hospital of Zhejiang University School of Medicine, Zhejiang, China
| | - Chunfeng Liu
- Department of Neurology, The Second Affiliated Hospital of Suzhou University, Jiangsu, China
| | - Yiwen Wu
- Department of Neurology, Ruijin Hospital of Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Changqing Wang
- Department of Neurology, The First Affiliated Hospital of Anhui Medical University, Anhui, China
| | - Zhiqiang Wang
- Department of Neurology, The First Affiliated Hospital of Fujian Medical University, Fujian, China
| | - Jun Chen
- Department of Neurology, Nanjing Brain Hospital, Nanjing Medical University, Jiangsu, China
| |
Collapse
|
50
|
Bertram KL, Williams DR. Diagnosis of dystonic syndromes—a new eight-question approach. Nat Rev Neurol 2012; 8:275-83. [DOI: 10.1038/nrneurol.2012.39] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
|