Episodic ataxia type 5 (EA5) is an extremely rare form of Hereditary episodic ataxia (see this term) characterized by recurrent episodes of vertigo and ataxia lasting several hours.
Data from Orphanet are used to provide information on a disease's name, synonym(s), and overview. Reference: Access aggregated data from Orphanet at Orphadata. Orphadata: Free access data from Orphanet. © INSERM 1999. Available on http://www.orphadata.org. Data version February 2026
Newly diagnosed with
Episodic ataxia type 5?
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Advocacy Organizations
Ataxia and me
To relieve the needs of sufferers of Ataxia or other neurological disorders, their families and carers for the public benefit by providing patient led support and by raising awareness of such conditions."
COMBINEDBrain Inc
COMBINEDBrain is a consortium for outcome measures and biomarkers for neurodevelopmental disorders. We are collaborating to cure rare, non-verbal brain disorders.
Moonshots for Unicorns
Curing single-gene disorders
National Ataxia Foundation
To accelerate the development of treatments and a cure while working to improve the lives of those living with Ataxia.
Project CASK
VISION Project CASK believes in a world free of the life limitations and debilitating effects of CASK gene disorders. MISSION To accelerate breakthroughs in research to develop treatments and a cure for CASK gene disorders. VALUES Collaboration. Transparency. Urgency.
Syndromes Without A Name (SWAN) Australia
Provide information, support and advocacy to families caring for a child with an undiagnosed or rare genetic condition.
TNPO2 Foundation
Develop personalized therapeutics for ultra rare genetic neurodevelopmental diseases, especially those arising from mutations in the TNPO2 gene.
Wave of Support, Inc
Empowering those affected by bleeding disorders and other rare disease through advocacy, resources, education, and support
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Clinical Trials
For a list of clinical trials in this disease area, please click here.