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Arquivos de Neuro-Psiquiatria

Print version ISSN 0004-282X


LI, Lm.; O'DONOGHUE, M.F.  and  SANDER, J.W.A.S.. Myoclonic epilepsy of late onset in trisomy 21. Arq. Neuro-Psiquiatr. [online]. 1995, vol.53, n.4, pp.792-794. ISSN 0004-282X.

We report the case of a patient with trisomy 21 (T21) with late onset epilepsy. The electro-clinical features were of myoclonic jerks on awakening and generalised tonic clonic seizures, with generalised spike and wave on EEG, and a progressive dementia. As familial Alzheimer's dementia and progressive myoclonic epilepsy (Unverricht-Lundborg type) are both linked to the chromosome 21, this case may represent a distinct progressive myoclonic epilepsy related to T21.

Keywords : myoclonic epilepsy; Down's syndrome; trisomy 21.

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