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Epidemiology of focal and generalized dystonia in Rochester, Minnesota
Author(s) -
Nutt John G.,
Muenter Manfred D.,
Aronson Arnold,
Kurland Leonard T.,
Melton L. Joseph
Publication year - 1988
Publication title -
movement disorders
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.352
H-Index - 198
eISSN - 1531-8257
pISSN - 0885-3185
DOI - 10.1002/mds.870030302
Subject(s) - focal dystonia , blepharospasm , dystonia , spasmodic torticollis , epidemiology , rochester epidemiology project , incidence (geometry) , medicine , torticollis , population , cervical dystonia , pediatrics , movement disorders , surgery , psychiatry , pathology , disease , population based study , physics , environmental health , optics
The epidemiology of generalized and focal dystonias was investigated in the Rochester, Minnesota, population over the period 1950–1982. The crude incidence of generalized dystonia was 2 per million persons per year, and for all focal dystonias combined, 24 per million per year. The crude prevalence rate was 34 per million persons for generalized dystonia and 295 per million persons for all focal dystonias. Torticollis was the most common focal dystonia; essential blepharospasm, oromandibular dystonia, spasmodic dysphonia, and writer's cramp were less common and had roughly equal incidence and prevalence rates.