Medical Dictionary

fatal familial insomnia

noun

medical Definition of fatal familial insomnia

:a rare fatal prion disease that is inherited as an autosomal dominant trait, that is marked by progressive neurodegenerative changes especially in the thalamus, and that tends to follow a clinical course exhibiting disturbances of the sleep cycle, intractable insomnia, motor disturbances (as ataxia and myoclonus), disturbances in autonomic nervous system functioning, dementia, coma, and death

Seen and Heard

What made you want to look up fatal familial insomnia? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!