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.
Polio affects nervous system most critically, working to damage brain and or spinal neurons. This can often lead to permanent paralysis. 11 people found this useful.