Medical Term:

Unverricht disease

Pronunciation: ūn′fĕr-ikt

Definition: a progressive myoclonic epilepsy; one of the degenerative gray matter disorders characterized by myoclonus and generalized seizures, with progressive neurologic and intellectual decline; age of onset between 8–13 years of age; autosomal recessive inheritance, caused by mutation in the cystatin B gene (CSTB) on 21q22.

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