Episodic ataxia (EA) summary of key features

Evidence-based neurology checklist on episodic ataxia (ea) summary of key features: EA1 This is caused by mutations in the KCNA1 gene The episodes last seconds to minutes There is inter-ictal nystagmus It is associated with epilepsy and malignant hyperthermia EA2 EA3 EA4 EA5 EA6 EA7 EA8 EA9 Newer…

EA1

  • This is caused by mutations in the KCNA1 gene
  • The episodes last seconds to minutes
  • There is inter-ictal nystagmus
  • It is associated with epilepsy and malignant hyperthermia

EA2

EA3

EA4

EA5

EA6

EA7

EA8

EA9

Newer genes

References

  1. Gasser T, Finstererb J, Baetsc J, et al. EFNS guidelines on the molecular diagnosis of ataxias and spastic paraplegias. Eur J Neurol 2010, 17:179–188.
  2. Jen JC, Graves TD, Hess EJ, et al. Primary episodic ataxias: diagnosis, pathogenesis and treatment. Brain 2007; 130:2484-2493.
  3. Choi KD, Choi JH. Episodic ataxias: clinical and genetic features. J Mov Disord 2016; 9:129-135.
  4. Corbett MA, Bellows ST, Li M, et al. Dominant KCNA2 mutation causes episodic ataxia and pharmacoresponsive epilepsy. Neurology 2016; 87:1975-1984.
  5. Lyu H, Boßelmann CM, Johannesen KM, et al. Clinical and electrophysiological features of SCN8A variants causing episodic or chronic ataxia. EBioMedicine 2023; 98:104855.

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