episodic ataxia type 4
MONDO:0011681Mondo
Findings
No curated finding names episodic ataxia type 4 yet. Everything below is reference data from Mondo, HPO and GenCC, not evidence about what affects it.
Definition
Episodic ataxia type 4 (EA4) is a very rare form of Hereditary episodic ataxia characterized by late-onset episodic ataxia, recurrent attacks of vertigo, and diplopia.
Definition from the Mondo Disease Ontology (MONDO:0011681), read 2026-09-29. CC BY 4.0.
Features
10 features
What the disease is reported to present with, and how often among people who have it — never how often a feature means the disease. HPO, annotations 2026-09-02.
- AtaxiaHPOHP:0001251
- Very frequent (80% to 99% of cases)
- Abnormal head movementsHPOHP:0002457
- Frequent (30% to 79% of cases)
- Abnormality of ocular smooth pursuitHPOHP:0000617
- Frequent (30% to 79% of cases)
- DiplopiaHPOHP:0000651
- Frequent (30% to 79% of cases)
- Frequent fallsHPOHP:0002359
- Frequent (30% to 79% of cases)
- Gaze-evoked nystagmusHPOHP:0000640
- Frequent (30% to 79% of cases)
- IncoordinationHPOHP:0002311
- Frequent (30% to 79% of cases)
- Postural instabilityHPOHP:0002172
- Frequent (30% to 79% of cases)
- VertigoHPOHP:0002321
- Frequent (30% to 79% of cases)
- NauseaHPOHP:0002018
- Occasional (5% to 29% of cases)
Where it sits
- A kind of
Other names
2 names
Resolves to: episodic ataxia type 4
- Also called
- PATXperiodic vestibulocerebellar ataxia