Total 15 clinical symptoms reported for Spinocerebellar ataxia type 21  Very Frequent (4)Occasional (1)Frequent (10)

Abnormality of extrapyramidal motor function	A neurological condition related to lesions of the basal ganglia leading to typical abnormalities including akinesia (inability to initiate changes in activity and perform volitional movements rapidly and easily), muscular rigidity (continuous contraction of muscles with constant resistance to passive movement), chorea (widespread arrhythmic movements of a forcible, rapid, jerky, and restless nature), athetosis (inability to sustain the muscles of the fingers, toes, or other group of muscles in a fixed position), and akathisia (inability to remain motionless).   Synonyms:Extrapyramidal dysfunction; Extrapyramidal signs; Extrapyramidal symptoms; Extrapyramidal syndrome; Extrapyramidal tract signs	Very frequent
Gait ataxia	A type of ataxia characterized by the impairment of the ability to coordinate the movements required for normal walking. Gait ataxia is characteirzed by a wide-based staggering gait with a tendency to fall.   Synonyms:Ataxia of gait; Ataxic gait; Inability to coordinate movements when walking	Very frequent
Intermittent microsaccadic pursuits	This section is currently in development.	Very frequent
Progressive cerebellar ataxia	Synonyms:Cerebellar ataxia, progressive; Progressive ataxia	Very frequent