I have to compliment the people at ACSH for this excellent essay on dementing diseases in the release for today.
Covers a lot of ground on an important and devastating problem. The major dementing disease is Alzheimer’s but there is multi stroke and traumatic, also Parkinson’s. In the infectious prion caused diseases are Kuru (rare one found in cannibals), Jakob Creutzfeldt (mad cow) Disease.
You may know there are encephalopathies that are caused by infection that could produce dementia or brain-damage disability, enteroviruses, Herpes Simplex, in fact many viral infections can cause encephalitis/meningitis that could cause encephalopathy.