spinocerebellar ataxia type 20
MeSH: C537199ORPHA: 101110
Overview
Spinocerebellar ataxia type 20 (SCA20) is a very rare subtype of type I autosomal dominant cerebellar ataxia (ADCA type I; see this term). It is characterized by cerebellar dysarthria as the initial typical manifestation.
Available Treatments (0)
No treatments linked yet
Clinical trials or compassionate use may be available — consult a specialist.
Clinical Presentation
Signs and symptoms associated with spinocerebellar ataxia type 20, sourced from HPO and Orphanet clinical annotations.
DysarthriaCerebellar atrophyDysphoniaBradykinesiaCerebral calcificationHypermetric saccadesLaryngeal dystoniaTremor by anatomical siteGaze-evoked nystagmusAtaxiaHyperreflexiaGait ataxiaVertigoAbnormal pyramidal signUpper limb postural tremorDownbeat nystagmusIsometric tremorKinetic tremorIntention tremor
Classification & Codes
MeSH Code
C537199Orphanet Code
ORPHA:101110spinocerebellar ataxia type 20
| MeSH | C537199 |
| Orphanet | ORPHA:101110 |
| Treatments | 0 drug(s) |
| Symptoms on record | 19 signs |
| Status | published |
Factual Authority
Last Updated3/20/2026
Clinical DataHPO · Orphanet
Drug DataFDA · EMA · CDSCO