Following his admission to Landy's program, Wilson was diagnosed with paranoid schizophrenia, with doctors finding evidence of brain damage caused by excessive and sustained drug use. The paranoid schizophrenia diagnosis was later retracted. Under Landy's regimen, Wilson developed facial tics, called tardive dyskinesia, that were symptomatic of the excessive psychotropic medications he was taking. Therapist Peter Reum, a fan who had met Wilson on several occasions, stated that Wilson would have deteroriated into a "drooling, palsied mental patient" and died of heart failure had he continued this drug regimen. However, Wilson intimated in a 2002 interview, "I don't regret [the Landy program]. I loved the guy—he saved me." After Wilson sought medical care elsewhere, he was declared to have organic personality disorder. Musician Sean O'Hagan, who was invited to collaborate with Wilson in the 1990s, characterized Wilson as "totally dependent on other people" and had "a kinda weird adult autism."
