Help me find a specific disease for a story?
I'm a writer! Nothing you'd probably know, but I like to think I'm alright. I'm working on a new long form fiction piece, and I'm planning to have a character fall ill and eventually die as a plot point. Problem is, this is a realistic, modern setting and I have no idea what disease to write him with.
I'm looking for something;
-Emphasis on loss of physical/mental fuction towards the end
-Harsh, fast slope between asymptomatic and death. (Within the span of a few months.)
Character is a late 30's male in slightly above average physical shape, no smoking, moderate drinking.
Thank you so much for your help!