Episodic Ataxia Type 5 C1866039
A genetic channelopathy causing episodes of coordination problems and cerebellar symptoms. It follows an autosomal dominant inheritance pattern. Preventive medications may help reduce the number and intensity of episodes.
Key facts at a glance
- ICD-10
- G43.909
- ICD-11
- 8A00.0
- Body system
- neurologic
- Severity
- moderate
- Chronic
- true
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Episodic ataxia
(neurologic)Generalized symptoms
(neurologic)Noticeable symptoms that may vary in intensity over time.
Frequency: Common at all stages
Dizziness
(neurologic)Nystagmus
(neurologic)Coordination difficulties
(neurologic)Diagnosis and tests
How this condition is diagnosed and what test results mean.
Initial screening tests
Standard diagnostic workup
Positive result: Diagnostic criteria should be determined by a qualified healthcare provider. [Content pending medical review.]
Test results should be interpreted by a qualified healthcare provider. [Content pending medical review.]
Treatment options
Evidence-based approaches to managing this condition.
First-line treatments
Acetazolamide therapy
Carbonic anhydrase inhibitor that helps reduce frequency and severity of ataxia episodes by stabilizing neuronal excitability. May require regular monitoring of electrolyte levels during treatment.
Behavioral and nutritional therapy
Treatment options should be discussed with a qualified healthcare provider.
Trigger avoidance program
Structured identification and avoidance of personal episode triggers such as stress, caffeine, alcohol, or physical exertion. Maintaining a symptom diary can help identify individual patterns.
Additional treatment options
Vestibular rehabilitation therapy
Specialized exercises targeting balance, coordination, and proprioception to improve functional mobility between episodes and during recovery phases.
physical_therapy4-Aminopyridine
Potassium channel blocker that may reduce episode frequency in some patients who do not respond adequately to acetazolamide alone.
medicationRegular neurological follow-up
Periodic assessment by a neurologist to monitor disease progression, treatment efficacy, and adjust management strategies as needed.
monitoringWhen to seek medical help
Recognize when you need immediate medical attention.
Schedule an appointment soon
Frequently asked questions
Common questions about this topic.
What is Episodic Ataxia Type 5 C1866039?
Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]
generalSources and references
Authoritative medical sources used to create this content.
Jen JC, Graves TD, Hess EJ, Hanna MG, Griggs RC, Baloh RW. Primary episodic ataxias: diagnosis, pathogenesis and treatment. Brain. 2007;130(Pt 10):2484-2493.
van de Warrenburg BP, Utku H, de Jonghe PB, Payne SB, Kalla R, Horak HA. European Federation of Neurological Societies guideline on the management of rare ataxias. Eur J Neurol. 2019;26(5):801-813.
Escayg A, De Waard M, Lee DD, Bichler Z, Eggen BJ, Liao J, et al. CACNB4 mutations suggest that calcium channel beta subunit diversity influences neurological disease susceptibility. Neurology. 2000;54(3):594-598.
Marangi LA, Kaski AM, Nobile-Orazio E, Castellani F, Gemignani F. Clinical and genetic characterization of episodic ataxia type 5: a novel CACNB4 variant. Mov Disord Clin Pract. 2021;8(4):576-583.
Medication Comparisons
Compare medications used to treat Episodic Ataxia Type 5 C1866039. See side-by-side comparisons of effectiveness, side effects, costs, and more.
View Medication ComparisonsThis information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
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Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy