Benign paroxysmal torticollis of infancy: An underdiagnosed condition

Disease spectrum of torticollis in children and diagnostic flowchart: A retrospective, single-centre study

AIM

To describe the disease spectrum of torticollis in Chinese children and to improve its diagnostic flowchart.

METHODS

A retrospective analysis was conducted at the Rehabilitation Department of Beijing Children's Hospital from 2017 to 2021. Patients were diagnosed and referred based on a diagnostic flowchart of torticollis. Detailed patient data were collected from the outpatient electronic medical record system.

RESULTS

A total of 2047 patients met the inclusion criteria. The top five conditions were congenital muscular torticollis (CMT) (76.6%), cerebral palsy (5.1%), ocular torticollis (4.7%), brachial plexus injury (1.9%) and atlantoaxial rotary subluxation (1.3%). CMT was most common in 0-2 year olds, cerebral palsy in 3-5 year olds, and atlantoaxial rotary subluxation in 7-12 year olds. The top five referral departments were orthopaedics, ophthalmology, otolaryngology, head and neck surgery, neurology and neurosurgery.

CONCLUSIONS

The disease spectrum of torticollis in children and the diagnostic flowchart provide important references for diagnosing torticollis, which necessitates multidisciplinary collaboration.

Benign Paroxysmal Torticollis

BACKGROUND

The purpose of this review is to clarify the natural course of benign paroxysmal torticollis (BPT) and update the information on the relationship of this disorder with migraine. BPT belongs to a group of "episodic syndromes that may be associated with migraine" and is diagnosed according to diagnostic criteria of the International Classification of Headache Disorders, 3rd edition. BPT affects infants and young children and is often an underdiagnosed manifestation since it is not recognized in cases with a benign evolution, requiring a careful differential diagnosis. It was first described by Snyder in 1969 as a movement disorder, a cervical dystonia consequent to labyrinthic disorder.

MATERIALS AND METHODS

The PubMed and Web of Science databases were consulted from 1968 to 2024, according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) 2020 guidelines.

RESULTS

In total, 113 articles were identified, 86 selected, and 25 considered for the purpose of this review. Clinical studies were considered in relation to evolution, cognitive, and motor development; genetic and not genetic etiology; the relationship with migraine with and without aura; vestibular migraine; hemiplegic migraine; and paroxysmal vertigo.

Fifteen-minute consultation: Evaluation of paediatric torticollis

Torticollis refers to a state in which the neck is twisted due to excessive contraction or shortening of the muscles on one side. Congenital muscular torticollis, which is more common than acquired torticollis, has an incidence of 0.3%-1.9% among all live births. The clinical approach to torticollis depends on the age at presentation, duration of torticollis and presenting symptoms. The underlying aetiology for torticollis varies with the age of the child. Torticollis can be a presenting feature for life-threatening conditions and thus requires careful evaluation.

The tilts, twists, and turns of torticollis

PURPOSE OF REVIEW

The purpose of this review is to outline the most recent understanding of torticollis in the pediatric population.

RECENT FINDINGS

It is important to diagnose the underlying condition of torticollis early in childhood, as some conditions that cause torticollis may result in major developmental delays in early motor milestones. Recent studies have highlighted that many of the rarer causes of torticollis are often misdiagnosed as congenital muscular torticollis, suggesting that physicians should pay close attention to the results of clinical and radiographic examinations when patients present with torticollis.

SUMMARY

Congenital muscular torticollis is the most common cause of torticollis. Other, less common causes of torticollis include vertebral abnormalities, ocular torticollis, gastrointestinal disorders, soft tissue infections of the neck, posterior fossa tumors, and benign paroxysmal torticollis. Although rare, these differential diagnoses should be considered during a clinical work-up for a patient who presents with torticollis.

Benign paroxysmal torticollis

Benign paroxysmal torticollis is a rare, usually benign, condition classified as an episodic syndrome. It is characterized by episodes of paroxysmal head tilt and associated symptoms, some of which are shared with migraine. It is likely to be the migraine equivalent with the earliest age of onset, starting in some cases in the neonatal period but resolving typically by the age of three or four. It may evolve into other episodic syndromes, migraine, or hemiplegic migraine, and an antecedent history or family history should be sought from migraineurs. Its prevalence and under-recognition has made it difficult to study. There are emerging associations with genes implicated in other paroxysmal syndromes, including hemiplegic migraine and episodic ataxia. Treatment currently centers on supportive care and environmental modification.

Infants With Torticollis Who Changed Head Presentation During A Physical Therapy Episode

PURPOSE

The purpose of this study is to describe infants with congenital muscular torticollis (CMT) who changed head presentation during an episode of physical therapy.

METHODS

Data were extracted from electronic medical records between January 2015 and December 2018 to describe infants with CMT who changed presentation.

RESULTS

Eighty-nine infants met criteria (predominantly male, non-Hispanic, White, with private insurance). Torticollis symptoms were noticed by 3 months in 90% of infants with a physical therapy examination before 6 months in 100% of infants. Most infants had early mild CMT with abnormal head shape and greater limitation in active cervical range of motion (ROM) than passive cervical ROM. Clinicians frequently recommended weekly physical therapy that included first- choice and supplemental interventions. Episodes of care averaged 7 visits over 64 days with 73% of infants meeting goals.

CONCLUSION

Physical therapists should recognize that infants with CMT may change presentation but benefit from physical therapy to resolve symptoms.Digital Abstract available at: http://links.lww.com/PPT/A366.

Benign paroxysmal torticollis: phenotype, natural history, and quality of life

BACKGROUND

Benign paroxysmal torticollis (BPT) is characterized by attacks of head tilt associated with vomiting, irritability, and/or ataxia in early childhood. BPT is associated with migraine but risk factors are unknown. Impact on quality of life is also unknown.

METHODS

Parents/caregivers of children with ongoing or resolved BPT participated in telephone interviews (n = 73). Those with ongoing BPT completed the Infant Toddler Quality of Life questionnaire (ITQoL).

RESULTS

Median age of children at the time of interview was 2.9 years (range 0.25-23). BPT was ongoing in 52% (n = 38). Nineteen percent (n = 14) developed migraine (median age 9.25 years, range 2.5-23) and 63% (n = 46) developed another episodic syndrome associated with migraine. Proportion of patients who developed migraine was higher among those with certain migrainous symptoms during BPT attacks vs. those without: phonophobia (58 vs. 21%, p = 0.02), photophobia and phonophobia (55 vs. 23%, p = 0.05), and photophobia, phonophobia, and motion sensitivity (60 vs. 22%, p = 0.02). ITQoL results showed significant impact of BPT on quality of life.

CONCLUSIONS

Children with BPT may develop migraine or other episodic syndromes associated with migraine. Presence of migrainous features during BPT episodes may increase likelihood of developing migraine. Though characterized as "benign," BPT can significantly impact children and families.

IMPACT

Benign paroxysmal torticollis (BPT) is a rare condition of early childhood characterized by episodes of head tilt associated with vomiting, irritability, ataxia, pallor, and/or malaise. This cohort study describes the phenotypic spectrum of BPT, variable treatment, natural history and association with migraine, and impact on development and quality of life. Children with BPT may go on to develop migraine or episodic syndromes that may be associated with migraine; presence of migrainous features during attacks may increase odds of developing migraine. BPT can have significant impact on quality of life, demonstrated by findings from the Infant Toddler Quality of Life questionnaire.

The childhood migraine syndrome

Migraine is a complex genetic brain disorder with an intricate pathogenesis and polymorphous clinical presentations, particularly in children. In this Perspective, we describe the different phenotypes of migraine in children, including conditions that have been referred to in the International Classification of Headache Disorders as "syndromes that may be related to migraine''. Evidence is presented for the integration of abdominal migraine, cyclical vomiting syndrome, benign paroxysmal vertigo, benign paroxysmal torticollis and infantile colic into the unified diagnosis of 'childhood migraine syndrome' on the basis of clinical and epidemiological characteristics, and shared inheritance. In our opinion, such integration will guide clinicians from specialities other than neurology to consider migraine in the assessment of children with these disorders, as well as stimulate research into the genetics, pathophysiology and clinical features of all disorders within the syndrome. A diagnosis of childhood migraine syndrome would also enable patients to benefit from inclusion in clinical trials of old and new migraine treatments, thus potentially increasing the number of treatment options available.

Torticollis in children with enlarged vestibular aqueducts

OBJECTIVES

To evaluate the association between torticollis and enlarged vestibular aqueduct (EVA).

METHODS

An online/phone survey was administered to parents of 133 children diagnosed with the following disorders: EVA, GJB2 (Connexin 26) mutations associated congenital hearing loss and epistaxis (control). The survey included questions regarding symptoms of torticollis, vertigo, and hearing loss.

RESULTS

Patients with EVA had a 10-fold greater odds of having torticollis than controls (31% vs. 4%; OR = 10.6; 95% CI: 2.9, 39.2). No patients with GJB2 had a reported history of torticollis. Torticollis preceded the diagnosis of hearing loss in most (87%) patients with EVA who had a reported history of torticollis. EVA patients were more likely to have reported motor delay than controls (40% vs. 15%; p = 0.002). EVA patients with prior torticollis (80%; 12/15) were more likely to have balance impairment than EVA patients without prior torticollis (12%; 4/33; p < 0.001). Twelve patients had a reported history of paroxysmal torticollis, all of whom had EVA.

CONCLUSION

Torticollis in infants may be a marker of EVA. Infants with torticollis should be monitored closely for hearing loss and motor delay, especially when the torticollis is paroxysmal.

Acute cerebellar ataxia: differential diagnosis and clinical approach

Cerebellar ataxia is a common finding in neurological practice and has a wide variety of causes, ranging from the chronic and slowly-progressive cerebellar degenerations to the acute cerebellar lesions due to infarction, edema and hemorrhage, configuring a true neurological emergency. Acute cerebellar ataxia is a syndrome that occurs in less than 72 hours, in previously healthy subjects. Acute ataxia usually results in hospitalization and extensive laboratory investigation. Clinicians are often faced with decisions on the extent and timing of the initial screening tests, particularly to detect treatable causes. The main group of diseases that may cause acute ataxias discussed in this article are: stroke, infectious, toxic, immune-mediated, paraneoplastic, vitamin deficiency, structural lesions and metabolic diseases. This review focuses on the etiologic and diagnostic considerations for acute ataxia.

Cervical Dystonia Mimics: A Case Series and Review of the Literature

Background

Cervical dystonia is mostly idiopathic in nature. However, a small subset of cases are mimics, leading to diagnostic pitfalls. There is paucity of literature on pseudodystonias affecting the cervical region.

Method

We performed a retrospective review of patients attending a movement disorders clinic over a period of 7 years (2012–2018). Among them, those who were considered to have mimics of cervical dystonia based upon clinical and supportive investigations were included.

Results

Six out of 2,412 patients (0.24%) were diagnosed as cervical dystonia mimics and the causes included isolated neck extensor myopathy (2), craniovertebral junction anomalies (2), sternocleidomastoid fibrosis (1) and post traumatic sequelae (1). Among these patients, three patients had received various treatments for cervical dystonia, including botulinum toxin injections.

Discussion

Mimics of isolated cervical dystonia are rare. A high degree of suspicion and proper diligent clinical assessment assists management and prognostication.

Episodic syndromes of childhood associated with migraine

PURPOSE OF REVIEW

This review covers recent advances in our understanding of episodic syndromes that may be associated with migraine in children and adolescents, as well as what is known about the treatment of these disorders.

RECENT FINDINGS

The episodic syndromes include benign paroxysmal torticollis, benign paroxysmal vertigo, abdominal migraine, and cyclic vomiting syndrome. Infant colic, or excessive crying in an otherwise healthy and well fed infant, may also fit into this category and is included in the appendix section of the most recent edition of the International Classification of Headache Disorders.

SUMMARY

Episodic syndromes are considered to be early life expressions of migraine in the developing brain. Additional research is needed to determine, which acute and preventive treatments are the most effective in managing these disorders.

Benign paroxysmal torticollis of infancy does not lead to neurological sequelae

AIM

To elucidate the natural course of benign paroxysmal torticollis, the relationship of this disorder to migraine and other paroxysmal diseases, and to analyse candidate genes.

METHOD

This was a case series of children with benign paroxysmal torticollis of infancy (BPTI) diagnosed from 1998 to 2005, at Astrid Lindgren Children's Hospital, Stockholm, Sweden. A neurological examination and a formalized motor assessment were performed from 2005 to 2007. At a second follow-up, in 2014 to 2015, the children and their parents were interviewed and candidate genes analysed.

RESULTS

The mean age of the eight females and three males included in the second follow-up was 13 years 9 months (SD 2y 2mo). All motor assessments were normal. Five had developed migraine, abdominal migraine, and/or cyclic vomiting. Prophylactic treatment or migraine-specific medication during attacks were not needed. No paroxysmal tonic upgaze, benign paroxysmal vertigo, epilepsy, episodic ataxia, or paroxysmal dyskinesia was reported. Rare genetic variants in CACNA1A and ATP1A2 were found in two children. Five had a family history of migraine.

INTERPRETATION

BPTI is transient and does not lead to neurological sequelae. Most children afflicted experience either a mild migraine or no paroxysmal disorder at all in their adolescence. Genetic variants in candidate genes were few, indicating potential genetic heterogeneity.

WHAT THIS PAPER ADDS

After resolution of their benign paroxysmal torticollis of infancy (BPTI), children display no gross motor delay. Most adolescents who previously had BPTI have not developed migraine. No mutations in candidate genes, known to cause hemiplegic migraine, were found. Associated symptoms are often lacking during episodes of torticollis.

Benign paroxysmal migraine variants of infancy and childhood: Transitions and clinical features

INTRODUCTION

Migraine variant disorders of childhood include benign paroxysmal torticollis of infancy (BPTI) and benign paroxysmal vertigo of childhood (BPVC). This study aimed to review our experience with BPTI and BPVC and determine the incidence of children transitioning between each of these disorders and to vestibular migraine (VM).

METHODS

We retrospectively reviewed the medical records of patients seen at the Balance and Vestibular Program at Boston Children's Hospital between January 2012 and December 2016 who were diagnosed with BPTI, BPVC, and/or VM.

RESULTS

Fourteen patients were diagnosed with BPTI, 39 with BPVC, and 100 with VM. Abnormal rotary chair testing was associated with progression from BPTI to BPVC (n = 8, p = 0.045). Eight (57.1%) patients with BPTI and 11 (28.2%) with BPVC had motor delay. Eleven (78.6%) patients with BPTI and 21 (53.8%) with BPVC had balance impairment. Six BPTI patients developed BPVC (42.9%), six BPVC patients developed VM (15.4%), and two patients progressed through all three disorders (2%). One BPTI patient progressed directly to VM.

DISCUSSION

Most patients with BPTI will experience complete resolution in early childhood, but some will progress to BPVC, and similarly many patients with BPVC will progress to VM. Parents of children with these disorders should be made aware of this phenomenon, which we refer to as "the vestibular march." Children with BPTI and BPVC should also be screened for hearing loss, otitis media, and motor delay.

Episodic Syndromes That May Be Associated With Migraine: A.K.A. "the Childhood Periodic Syndromes"

Previously called "childhood periodic syndromes that are commonly precursors of migraine" in International Headache Classification of Headache Disorders (ICHD)-II, these disorders were renamed "episodic syndromes that may be associated with migraine" in ICHD-III beta. The specific disorders reviewed in this article include: benign paroxysmal torticollis, benign paroxysmal vertigo, abdominal migraine, and cyclical vomiting syndrome, as well as infantile colic, which was recently added under the appendix section in ICHD-III beta.