episodic ataxia type 2
ICD-10: G11.8MeSH: C535506ORPHA: 97
Overview
episodic ataxia characterized by acetazolamide-responsive attacks of ataxia lasting for hours/days (unlike EA1, which lasts up to minutes); caused by mutations in CACNA1A encoding P/Q-type voltage-gated calcium channel CaV2.1
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 episodic ataxia type 2, sourced from HPO and Orphanet clinical annotations.
NystagmusAtaxiaVertigoTinnitusDiplopiaDysarthriaDystoniaNausea and vomitingMigraineHemiplegiaTorticollisAtypical behaviorIntellectual disabilityCerebellar vermis atrophy
Classification & Codes
ICD-10 Code
G11.8MeSH Code
C535506Orphanet Code
ORPHA:97episodic ataxia type 2
| ICD-10 | G11.8 |
| MeSH | C535506 |
| Orphanet | ORPHA:97 |
| Treatments | 0 drug(s) |
| Symptoms on record | 14 signs |
| Status | published |
Factual Authority
Last Updated3/20/2026
Clinical DataHPO · Orphanet
Drug DataFDA · EMA · CDSCO