Terms for mentally ill people that should be brought back

Mental illnesses suck and it's been a real struggle for me in the last four months, specifically. I had self-harm thoughts about 3 weeks ago, thoughts I haven't had in over a decade. It was kind of scary, and my mental health took a nosedive around a person. I'm not going to write about that particular subject here. Maybe I will someday. 

I love this book and watched the TNT show about it. For the most part, it was faithful to the story; however, the second season (centered around Carr's second book) took some liberties by including a romance. Ugh...why do they do that?

I mention this book at all (and I do recommend reading it) because I started reading it again. I came across something in the book that I had read before, and it hit me a little differently this time around.

Before the 20th century, mentally ill patients were not referred to the clinical terms that are used now. While the negative terms haven't changed all that much among the uneducated (crazy, psycho, nuts, etc.) the term resonated with me.

The word used for the mentally ill, was alienated. It described someone that was not only alienated from society in general, it also pertained to being alienated from who they truly were. I'm almost positive that those who suffer from a mental illness, like me, would find this explanation correct. So, as you can guess, an alienist is a therapist/psychiatrist.