spinocerebellar ataxia 20

An autosomal dominant cerebellar ataxia that is characterized by cerebellar dysarthria.

Signs and symptoms

• Limb ataxia
• Palatal tremor
• Dysphonia
• Hypermetric saccades
• Gait ataxia
• Dysarthria
• Abnormally high-pitched voice
• Abnormal pyramidal sign
• Action tremor
• Postural tremor