ICD-11 definition : Spinocerebellar ataxia type 1 (SCA1) is a subtype of type I autosomal dominant cerebellar
ataxia (ADCA type I) characterized by dysarthria, writing difficulties, limb ataxia,
and commonly nystagmus and saccadic abnormalities.;
Spinocerebellar ataxia type 1 (SCA1) is a subtype of type I autosomal dominant cerebellar
ataxia (ADCA type I) characterized by dysarthria, writing difficulties, limb ataxia,
and commonly nystagmus and saccadic abnormalities.