According to the N.Y. Times in 1982, Hinckley suffered from a number of personality disorders, primarily schizotypal, but the psychiatrist evaluating him thought that those disorders were insufficient to explain the complexity of his symptoms. In other words, Mr. Hinckley is a unique individual.

EXCERPTS FROM PSYCHIATRIC EVALUATION OF HINCKLEY BY THE MENTAL HOSPITAL - NYTimes.com

I hope that he doesn't have so much mental illness anymore but I agree with Gaylegg that it will probably be very hard for him to adjust to real life.