Please see the discussion on Requests for cleanup for more information and remove this template after the problem has been dealt with. 1  Afep pigeon (Columba unicincta) 2  African owl pigeon (Columba livia domestica) 3  African green pigeon (Treron calvus) 4  African olive pigeon (Columba arquatrix) 5  American pigeon (Patagioenas)
Fatal familial insomnia and sporadic fatal insomnia differ from other prion diseases because they affect predominantly one area of the brain, the thalamus, which influences sleep. The familial and sporadic forms typically begin between the ages of 30 and 50 years.
What Is Fatal Familial Insomnia? When Stacey approaches her professor, Dr. Zui, about fatal familial insomnia (FFI), she notices his grim expression and figures it must be a serious condition. Characterized by a sharp incline of insomnia, FFI is a familial condition, which means it's passed on from parent to child through many generations.