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Gozzi L, Cozzi D, Zantonelli G, Giannessi C, Giovannelli S, Smorchkova O, Grazzini G, Bertelli E, Bindi A, Moroni C, Cavigli E, Miele V. Lung Involvement in Pulmonary Vasculitis: A Radiological Review. Diagnostics (Basel) 2024; 14:1416. [PMID: 39001306 PMCID: PMC11240918 DOI: 10.3390/diagnostics14131416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2024] [Revised: 06/28/2024] [Accepted: 06/29/2024] [Indexed: 07/16/2024] Open
Abstract
Pulmonary vasculitis identifies a heterogeneous group of diseases characterized by inflammation, damage and necrosis of the wall of pulmonary vessels. The most common approach to classify vasculitis is according to etiology, therefore dividing them into primary and secondary, with a further sub-classification of primary vasculitis based on the size of the affected vessels (large, medium, and small). Pulmonary involvement is frequently observed in patients with systemic vasculitis and radiological presentation is not pathognomonic, but may vary between diseases. The main findings using high-resolution computed tomography (HRCT) include small vessel wall thickening, nodular lesions, cavitary lesions, reticular opacities, ground-glass opacities (GGO), consolidations, interlobular septal thickening, tracheobronchial stenosis, and aneurysmal dilatation of pulmonary arteries, with or without pleural effusion. Radiological diagnosis alone is difficult since signs and symptoms of lung vessel involvement are often non-specific and might overlap with other conditions such as infections, connective tissue diseases and neoplasms. Therefore, the aim of this review is to describe the most common radiological features of lung involvement in pulmonary vasculitis so that, alongside detailed clinical history and laboratory tests, a prompt diagnosis can be performed.
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Affiliation(s)
- Luca Gozzi
- Department of Experimental and Clinical Biomedical Sciences, Careggi University Hospital, University of Florence, 50135 Florence, Italy
| | - Diletta Cozzi
- Department of Emergency Radiology, Careggi University Hospital, 50134 Florence, Italy
| | - Giulia Zantonelli
- Department of Biomedical Sciences for Health, University of Milan, 20133 Milan, Italy
| | - Caterina Giannessi
- Department of Experimental and Clinical Biomedical Sciences, Careggi University Hospital, University of Florence, 50135 Florence, Italy
| | - Simona Giovannelli
- Department of Experimental and Clinical Biomedical Sciences, Careggi University Hospital, University of Florence, 50135 Florence, Italy
| | - Olga Smorchkova
- Department of Experimental and Clinical Biomedical Sciences, Careggi University Hospital, University of Florence, 50135 Florence, Italy
| | - Giulia Grazzini
- Department of Emergency Radiology, Careggi University Hospital, 50134 Florence, Italy
| | - Elena Bertelli
- Department of Emergency Radiology, Careggi University Hospital, 50134 Florence, Italy
| | - Alessandra Bindi
- Department of Emergency Radiology, Careggi University Hospital, 50134 Florence, Italy
| | - Chiara Moroni
- Department of Emergency Radiology, Careggi University Hospital, 50134 Florence, Italy
| | - Edoardo Cavigli
- Department of Emergency Radiology, Careggi University Hospital, 50134 Florence, Italy
| | - Vittorio Miele
- Department of Emergency Radiology, Careggi University Hospital, 50134 Florence, Italy
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Chan JS, Dasgupta A, Dimitrovski D, Huang W, Yang G, Tweedie PJ, Kopecny LR, Tipirneni S, Borchert GA, Ouyang CMH, Tsoi ATW, Vasanthan A, Rezkalla M, Fatima A, Lee NS, Gunasegaram JR, Allende A, Meades KV, Gaden SC, Agar A, Francis IC. Temporal arteritis: Neurological and ophthalmological involvement in the absence of documented systemic features. Surv Ophthalmol 2024; 69:661-663. [PMID: 38387730 DOI: 10.1016/j.survophthal.2024.02.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Revised: 02/12/2024] [Accepted: 02/16/2024] [Indexed: 02/24/2024]
Affiliation(s)
- Jian S Chan
- School of Clinical Medicine, Faculty of Medicine and Health, University of New South Wales, Sydney, Australia
| | - Amrita Dasgupta
- Singapore National Eye Centre, SingHealth, Singapore, Singapore
| | | | - William Huang
- School of Medicine and Public Health, University of Newcastle, Newcastle, Australia; Northern Sydney Local Health District, NSW Health, Sydney, Australia
| | - Geraldine Yang
- School of Clinical Medicine, Faculty of Medicine and Health, University of New South Wales, Sydney, Australia
| | - Peter J Tweedie
- School of Clinical Medicine, Faculty of Medicine and Health, University of New South Wales, Sydney, Australia
| | - Lloyd R Kopecny
- School of Clinical Medicine, Faculty of Medicine and Health, University of New South Wales, Sydney, Australia
| | - Shraddha Tipirneni
- School of Clinical Medicine, Faculty of Medicine and Health, University of New South Wales, Sydney, Australia; Global Health Neurology Lab, Sydney, Australia
| | - Grace A Borchert
- Nuffield Laboratory of Ophthalmology, Department of Clinical Neurosciences, Oxford University, Oxford, United Kingdom
| | - Catherine M H Ouyang
- School of Clinical Medicine, Faculty of Medicine and Health, University of New South Wales, Sydney, Australia
| | - Amy T W Tsoi
- School of Clinical Medicine, Faculty of Medicine and Health, University of New South Wales, Sydney, Australia
| | - Aadhavi Vasanthan
- School of Clinical Medicine, Faculty of Medicine and Health, University of New South Wales, Sydney, Australia
| | - Mina Rezkalla
- School of Clinical Medicine, Faculty of Medicine and Health, University of New South Wales, Sydney, Australia
| | - Aleeza Fatima
- Department of Ophthalmology, Prince of Wales Hospital, Sydney, Australia
| | - Natalie S Lee
- Northern Sydney Local Health District, NSW Health, Sydney, Australia
| | | | | | | | - Susan C Gaden
- Department of Radiology, Concord Hospital, Sydney, Australia
| | - Ashish Agar
- School of Clinical Medicine, Faculty of Medicine and Health, University of New South Wales, Sydney, Australia; Department of Ophthalmology, Prince of Wales Hospital, Sydney, Australia
| | - Ian C Francis
- School of Clinical Medicine, Faculty of Medicine and Health, University of New South Wales, Sydney, Australia; Department of Ophthalmology, Prince of Wales Hospital, Sydney, Australia.
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Pietramaggiori G, Bastin A, Ricci F, Bassetto F, Scherer S. Minimally invasive nerve and artery sparing surgical approach for temporal migraines. JPRAS Open 2024; 39:32-41. [PMID: 38162535 PMCID: PMC10755679 DOI: 10.1016/j.jpra.2023.11.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Accepted: 11/10/2023] [Indexed: 01/03/2024] Open
Abstract
Background Temporal migraines (TM) present with throbbing, pulsating headaches in the temporal area. Different surgical techniques ranging from resecting the auriculotemporal nerve (ATN) and or ligating the superficial temporal artery (STA) have shown similar good results to decrease TM symptoms. No conclusive data supports a specific disease of the STA in TM patients. A minimally invasive technique is proposed to preserve both vascular and nerve structures. Methods Patients with drug resistant TM were selected and treated with two techniques: nerve sparing and nerve and artery sparing. The study included 57 patients with TM, with an average age of 47.5 years. TM improvement was quantified after at least one year of follow up time. STA biopsies were sent for histological analysis. Results Forty-two patients underwent nerve-sparing decompression, with a therapeutic success rate of 78.6%, corresponding to 22.1 days with migraine per month decreasing to 6.2. Histological analysis of the STA showed varying degrees of endofibrosis in 75% of the samples. Histological results do not correlate with the intensity of symptoms before or after surgery. Fifteen patients underwent nerve and artery sparing arteriolysis, with an overall therapeutic success rate of 86.6% of which 80% had >90% improvement. The average migraine days dropped from 24 to 2.5 days per month in this group. Conclusion Minimally invasive nerve sparing approaches are an effective and safe treatment to improve drug resistant TM symptoms. Endofibrosis of the STA was present in 75% of the cases, but it was found to be unrelated to pre-operative symptoms and outcome. Results are promising, but the limited numbers of patients treated with artery and nerve sparing technique needs further investigations.
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Affiliation(s)
- Giorgio Pietramaggiori
- Global Medical Institute, Division of Aesthetic and Migraine Surgery, Avenue Jomini 8, 1004 Lausanne, Switzerland
| | - Alessandro Bastin
- University of Padua, Department of Neurosciences, Division of plastic Surgery, Via Giustiniani 2, 35128 Padova, Italy
| | - Federico Ricci
- University of Padua, Department of Neurosciences, Division of plastic Surgery, Via Giustiniani 2, 35128 Padova, Italy
| | - Franco Bassetto
- University of Padua, Department of Neurosciences, Division of plastic Surgery, Via Giustiniani 2, 35128 Padova, Italy
| | - Saja Scherer
- Global Medical Institute, Division of Aesthetic and Migraine Surgery, Avenue Jomini 8, 1004 Lausanne, Switzerland
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Lee NSY, Lu TY, Allende A, Francis IC. Temporal arteritis presenting with facial swelling and a negative temporal artery biopsy. BMJ Case Rep 2023; 16:e255731. [PMID: 37723086 PMCID: PMC10510902 DOI: 10.1136/bcr-2023-255731] [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] [Indexed: 09/20/2023] Open
Abstract
A man in his 60s presented to the emergency department with marked bilateral preauricular swelling, associated with jaw claudication, temporal tenderness and blurred vision. He was immediately treated for temporal arteritis by commencing systemic corticosteroids. A temporal artery biopsy showed no evidence of vasculitis. However, positron emission tomography-CT demonstrated increased uptake in the medium-large vessels, including the left superficial temporal artery and aorta. This case illustrates that facial swelling may be an under-recognised presenting feature of temporal arteritis, and that a negative temporal artery biopsy does not always rule out a diagnosis of temporal arteritis, and should not delay treatment.
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Affiliation(s)
- Natalie Si-Yi Lee
- Faculty of Medicine, University of New South Wales, Sydney, New South Wales, Australia
- Department of Ophthalmology, Royal North Shore Hospital, Sydney, New South Wales, Australia
| | - Tim Y Lu
- Faculty of Medicine, Macquarie University, Sydney, New South Wales, Australia
- Department of Rheumatology, Northern Beaches Hospital, Sydney, New South Wales, Australia
| | - Alexandra Allende
- Department of Pathology, Douglass Hanly Moir Pathology, Sydney, New South Wales, Australia
| | - Ian C Francis
- Faculty of Medicine, University of New South Wales, Sydney, New South Wales, Australia
- Department of Ophthalmology, Northern Beaches Hospital, Sydney, New South Wales, Australia
- Department of Ophthalmology, Prince of Wales Hospital, Sydney, New South Wales, Australia
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Kapuczinski A, Demeulenaere N, Tavares Ferreira N, Ciamala A, Rossi C, Rusu S, Remmelink M, Vandergheynst F, Léon M. Giant cell arteritis with adventitial pattern in a 51-year-old man: A case report. Clin Case Rep 2023; 11:e7109. [PMID: 36941841 PMCID: PMC10023673 DOI: 10.1002/ccr3.7109] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 02/13/2023] [Accepted: 03/02/2023] [Indexed: 03/20/2023] Open
Abstract
Clinical presentation as well as histological or biological findings can sometimes make the diagnosis of giant cell arteritis difficult. Histopathological features of temporal artery biopsy from giant cell arteritis patients are also challenging because of the various described appearances or even finding of clinically normal temporal artery biopsy does not rule out the diagnosis. We here describe the case of a 51-year-old man with temporal artery biopsy showing lymphocytes infiltrates in the adventitia corresponding to the so-called adventitial pattern of giant cell arteritis according to Hernandez-Rodriguez et al.
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Affiliation(s)
- Abeline Kapuczinski
- Rheumatology DepartmentH.U.B ErasmeBruxellesBelgium
- Rheumatology DepartmentHôpital Ambroise ParéMonsBelgium
| | | | | | | | - Camélia Rossi
- Infectious Disease DepartmentHôpital Ambroise ParéMonsBelgium
| | - Stefan Rusu
- Anatomopathology DepartmentH.U.B ErasmeBruxellesBelgium
| | | | | | - Marc Léon
- Rheumatology DepartmentHôpital Ambroise ParéMonsBelgium
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Burg LC, Karakostas P, Behning C, Brossart P, Kermani TA, Schäfer VS. Prevalence and characteristics of giant cell arteritis in patients with newly diagnosed polymyalgia rheumatica - a prospective cohort study. Ther Adv Musculoskelet Dis 2023; 15:1759720X221149963. [PMID: 36777696 PMCID: PMC9909075 DOI: 10.1177/1759720x221149963] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Accepted: 12/20/2022] [Indexed: 02/10/2023] Open
Abstract
Background It is known that giant cell arteritis (GCA) and polymyalgia rheumatica (PMR) often occur together. So far, the prevalence of GCA in newly diagnosed PMR patients has not been evaluated in a prospective ultrasound study. Objective The aim of this study was to assess the prevalence of GCA using vascular ultrasound in patients with newly diagnosed PMR. Design A consecutive cohort of newly diagnosed PMR patients was prospectively evaluated for the presence of GCA with the use of systematic musculoskeletal and vascular ultrasound examination. Methods Overall, 60 patients with newly diagnosed PMR were prospectively enrolled. Symptoms and laboratory findings were collected. All patients underwent ultrasound of shoulder and hip joints, and vascular ultrasound evaluating the facial, temporal, carotid, vertebral and axillary arteries. Patients were diagnosed with GCA if they had ultrasound imaging findings of GCA. Patients with PMR (PMR-group) and patients with PMR and GCA (PMR-GCA-group) were compared, and a C-reactive protein (CRP) cut-off value was evaluated. Results GCA was diagnosed in 28 of 60 PMR patients (46%). The PMR-group consisted of 20 (62.5%) females with a mean age of 69 (±9.9) years, while the PMR-GCA-group consisted of 11 (39.3%) females with a mean age of 74 (±8.4) years. In 13 of 28 patients (46%) in the PMR-GCA-group, GCA was subclinical and only diagnosed by ultrasound. The PMR-GCA-group showed higher values of joint effusion and significantly higher CRP values. A CRP cut-off value of 26.5 mg/litre (reference range 0-5 mg/litre) yielded a sensitivity of 66% with a specificity of 73% for GCA. Conclusion GCA was found in 46% of newly diagnosed PMR patients; 22% of the patients with PMR had asymptomatic GCA. Joint effusions were higher in the PMR-GCA-group, with significant results for the hip joint. A CRP cut-off value of ⩾26.5 mg/litre in PMR can help in the identification of subclinical GCA.
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Affiliation(s)
| | - Pantelis Karakostas
- Clinic of Internal Medicine III, Department of Oncology, Haematology, Rheumatology and Clinical Immunology, University Hospital Bonn, Bonn, Germany
| | - Charlotte Behning
- Institute of Medical Biometry, Informatics and Epidemiology, University Hospital Bonn, Bonn, Germany
| | - Peter Brossart
- Clinic of Internal Medicine III, Department of Oncology, Haematology, Rheumatology and Clinical Immunology, University Hospital Bonn, Bonn, Germany
| | - Tanaz A. Kermani
- Division of Rheumatology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA
| | - Valentin S. Schäfer
- Clinic of Internal Medicine III, Department of Oncology, Haematology, Rheumatology and Clinical Immunology, University Hospital Bonn, Bonn, Germany
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Goyal N, Basnet A, Donenfeld TT, Tiwari K, Clemen BM, Kyaw H, Nwosu I, Ibeson EC, Konka S. An Unusual Case of Giant Cell Arteritis. Cureus 2022; 14:e26483. [PMID: 35919218 PMCID: PMC9339147 DOI: 10.7759/cureus.26483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/01/2022] [Indexed: 11/06/2022] Open
Abstract
Giant cell arteritis (GCA), also known as temporal arteritis (TA), is a systemic autoimmune inflammation of medium and large arteries. It is the most common vasculitis affecting adults older than 50, with an incidence of 20/100,000 and an average age of onset of 70. Typically, patients initially present with new-onset headaches, visual changes and disturbances, jaw claudication, arthralgias, and tender or swollen temporal or occipital arteries. Our patient is a 73-year-old male who presented to the emergency room with 10 days of bilateral headache radiating to the occipital area associated with fevers, persistent chills, generalized weakness, and a headache described as constant, dull, 9 out of 10 pain, and minor pain with neck flexion. Lab work revealed an elevated erythrocyte sedimentation rate (ESR) and C-reactive protein (CRP). The patient had tender palpation to his temples and due to a high suspicion of giant cell arteritis, he was started on high-dose steroids with rapid relief of his symptoms. Biopsy showed evidence of active non-granulomatous vasculitis and confirmed bilateral temporal arteritis within the context of the clinical setting. GCA patients are more likely to be women and typically present with unilateral headache (66% of GCA), jaw claudication (50%), fevers (50%), and transient visual loss (16-54%). Here, we describe a 73-year-old male with a past medical history of cerebral vascular accident (CVA), diabetes, and cancer that presented with 10 days of bilateral headaches and fevers. Unlike the usual presentation, our patient denied any vision and joint pain changes, and the temporal arteries were not stiff to palpation. This patient presentation is unique to previous reports in the limited display of symptoms and absence of the most commonly associated manifestations. Although his presentation supported GCA, the features of elevated ESR and CRP, headache, and fever were too general to diagnose GCA exclusively, and his additional symptoms of rhinorrhea and sinus pain more likely supported infection. Our case indicates the importance of maintaining a high index of clinical suspicion for GCA in the elderly population presenting with headaches and elevated ESR and CRP. GCA, also known as temporal arteritis (TA), is a systemic autoimmune inflammation of medium and large arteries. Typically, patients initially present with new-onset headaches, visual changes and disturbances, jaw claudication, arthralgias, and tender or swollen temporal or occipital arteries. Diagnosis requires high clinical suspicion, and treatment revolves around high doses of steroids.
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Piva E, Stoppa A, Pelloso M, Plebani M. The VES-Matic 5 system: performance of a novel instrument for measuring erythrocyte sedimentation rate. Clin Chem Lab Med 2022; 60:1081-1090. [PMID: 35535422 DOI: 10.1515/cclm-2022-0359] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 04/21/2022] [Indexed: 01/29/2023]
Abstract
OBJECTIVES The VES-Matic 5 is an automated analyzer that assesses erythrocyte sedimentation rate based on a modified Westergren sedimentation technique. Instrument performance was established by addressing the recommendations of the International Council for Standardization in Haematology. METHODS Comparison against the reference Westergren method was performed for all samples, and further for the low, middle, and upper third of the analytical range. Intra-run precision, inter-run precision, and interference studies were further assessed. This study included the evaluation of reference ranges. RESULTS The comparison of methods by Passing-Bablok analysis has shown a good agreement without systematic or proportional differences. The regression equation was y=-0.646 + 0.979x. The mean bias of -0.542 was obtained by Bland-Altman analysis and the upper limit of 8.03 with the lower limit of -9.11 can be considered clinically acceptable. Intra-run and inter-run precision were good for each parameter and interference studies did not show any significant bias with exception of anemia samples, which showed a proportional difference when comparing high erythrocyte sedimentation rate values. Using the local adult reference population, we verified the reference ranges in comparison to those available in the literature, and according to the Clinical Laboratory Standards Institute (CLSI) EP28-A3C document. We determined the upper limit partitioned by gender and the following age groups: from 18 to 50, from 50 to 70, and over 70. CONCLUSIONS The VES-Matic 5 analyzer presented good comparability with the reference method. As there are commercial quality control and suitable external quality assessment (EQA) material and programs, the VES-Matic 5 can be employed appropriately for routine purposes.
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Affiliation(s)
- Elisa Piva
- Department of Laboratory Medicine, University-Hospital of Padova, Padova, Italy
| | - Alice Stoppa
- Department of Medicine - DIMED, University of Padova, Padova, Italy
| | - Michela Pelloso
- Department of Laboratory Medicine, University-Hospital of Padova, Padova, Italy
| | - Mario Plebani
- Department of Laboratory Medicine, University-Hospital of Padova, Padova, Italy.,Department of Medicine - DIMED, University of Padova, Padova, Italy
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Zhou S, Badash I, Doherty JK. Nummular and Side-locked Headaches for the Otolaryngologist. Otolaryngol Clin North Am 2022; 55:697-706. [PMID: 35490038 DOI: 10.1016/j.otc.2022.02.008] [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] [Indexed: 11/18/2022]
Abstract
Side-locked headaches are a common symptom having a wide-ranging differential. Unchanging in laterality, these headaches can represent neuralgias, trigeminal autonomic cephalgias, ophthalmologic disorders, otolaryngologic and craniofacial disorders, vascular disorders, and malignancy. In rarer situations, they have presented secondary to neurosurgical or dermatologic considerations. Loss of cranial nerves and visual changes warrant additional evaluation.
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Affiliation(s)
- Sheng Zhou
- LAC+USC Medical Center Otolaryngology Department, 1200 North State Street, Suite A2E, Los Angeles, CA 90033, USA.
| | - Ido Badash
- LAC+USC Medical Center Otolaryngology Department, 1200 North State Street, Suite A2E, Los Angeles, CA 90033, USA
| | - Joni K Doherty
- USC Caruso Department of Otolaryngology Head and Neck Surgery, 1450 San Pablo Street #5100, Los Angeles, CA 90033, USA
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Zhu K, Born DW, Dilli E. Secondary Headache: Current Update. Headache 2020; 60:2654-2664. [PMID: 33078413 DOI: 10.1111/head.13986] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Accepted: 09/10/2020] [Indexed: 12/13/2022]
Abstract
PURPOSE The purpose of this paper is to review some of the causes of secondary headache particularly focusing on the subcategories of secondary headache in the International Classification of Headache Disorders, 3rd edition, the clinical features of these headaches, and their associated features and management. OVERVIEW Headache attributed to trauma or injury to the head and/or neck, headache attributed to cranial or cervical vascular disorder, headache attributed to non-vascular intracranial disorder, headache attributed to a substance or its withdrawal, headache attributed to infection, headache attributed to disorder of homeostasis, and headache or facial pain attributed to disorder of the cranium, neck, eye, ears, nose, sinuses, teeth, mouth, or other facial or cervical structure are discussed in this paper. DISCUSSION Headache is a common symptom of multiple medical conditions. Although a minority of headache patients have a secondary basis for their headaches, it is important to identify clinical features of secondary headache disorders including both the headache and non-headache features of the condition, diagnose the secondary etiology correctly, and treat them appropriately.
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Affiliation(s)
- Kai Zhu
- Department of Medicine, Division of Neurology, University of British Columbia, Vancouver, BC, Canada
| | - Dawson W Born
- Department of Medicine, Division of Neurology, University of British Columbia, Vancouver, BC, Canada
| | - Esma Dilli
- Department of Medicine, Division of Neurology, University of British Columbia, Vancouver, BC, Canada
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