Prevalence study of primary dystonia in Iceland

To access publisher full text version of this article. Please click on the hyperlink in Additional Link field In Iceland, the crude prevalence for all types of primary dystonia was 37.1/10(5) (confidence interval, 30.4-44.9). Focal dystonia had the highest prevalence (31.2/10(5)), followed by segmen...

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Bibliographic Details
Published in:Movement Disorders
Main Authors: Asgeirsson, Hilmir, Jakobsson, Finnbogi, Hjaltason, Haukur, Jonsdottir, Helga, Sveinbjornsdottir, Sigurlaug
Format: Article in Journal/Newspaper
Language:English
Published: Wiley-Liss 2006
Subjects:
Adult
Age Distribution
Dystonic Disorders
Female
Humans
Iceland/epidemiology
Male
Middle Aged
Prevalence
Sex Distribution
Iceland
Online Access:http://hdl.handle.net/2336/6499
https://doi.org/10.1002/mds.20674
Description
Summary:To access publisher full text version of this article. Please click on the hyperlink in Additional Link field In Iceland, the crude prevalence for all types of primary dystonia was 37.1/10(5) (confidence interval, 30.4-44.9). Focal dystonia had the highest prevalence (31.2/10(5)), followed by segmental (3.1/10(5)), multifocal (2.4/10(5)) and generalized dystonia (0.3/10(5)). Cervical dystonia was the most common focal dystonia (11.5/10(5)), followed by limb dystonia (8.0/10(5)), laryngeal dystonia (5.9/10(5)), blepharospasm (3.1/10(5)), and oromandibular dystonia (2.8/10(5)). The male:female ratio for all patients was 1:1.9 (P=0.0007), and females outnumbered males in all subtypes except oromandibular dystonia. Mean age of onset for all patients was 42.7 years (range, 3-82 years). This prevalence of primary dystonia is higher than in most reported studies, possibly because of more complete ascertainment but the relative frequencies of dystonia subtypes is similar.

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