Yes- he had once been treated for grain-shock. It's similar to shell-shock, only grain-shock results from having a cache of rice explode in close proximity to an ass. It's been known to incapacitate the ass for at least forty minutes and make it a clingy, dependent pathological liar for life.
I don't know of Kerry being treated for any mental disorder (though IMO he should have been!), but his first wife did suffer from serious depression. I believe that Kerry left her during that time. I forget whether she was hospitalized for it.
(shhhh....we're saving that for later....)
I started a thread on this a while back. Kerry has seen a therapist at some time in the past. Nothing has been found pointing to actual medical treatment.
"Question for fellow freepers, but sorry, a bit off the subject, Did Kerry get treated for a mental disorder?"
Did = Should?
If so, the answer is yes.