The Atlantic Online has a good article titled Bobby Fischer's Pathetic Endgame that outlines the rise and fall of former World Chess Champion Bobby Fischer and where he is today. A very sad read I'm afraid. Unable to return to the US because he violated an Executive Order in 1992 by going to Yugoslavia for a rematch against Spassky, he has been living in exile in Asia. He has apparently lapsed into a severe state of paranoia and delusion convinced of grand conspiracies and deception. The article gives an engaging rundown of the events in his life, his craziness, his arrogance, and his deterioration. The article seems to leave little doubt that he had some type of mental illness. Was it never addressed? Did he never receive help or treatment?