I understand that Karen Allen had some kind of an emotional breakdown after she was in the 1st Indiana jones?

after she was in the first indy movies. does anyone know, remember, etc. as to what happened? I cannot remember if she became schizophrenic, manic depressive, etc. I love the lady, but just want to know what happened to her. I am sooooo glad and happy for her that she is in the new movie......thanx to all.................