I'm posting this just for discussion and because I think it's interesting.
OK I found the Six Degrees story. It's actually from this forum, but looks like the thread is deleted:https://www.dreamtheaterforums.org/boards/index.php?topic=20426.0
From a book by: Steven Schwartzberg, written in 2000:
https://www.amazon.com/Casebook-Psychological-Disorders-Emotional-Distress/dp/0321011716 Case 4: Bipolar Disorder
Thirty-year old Audrey Samson briskly paced the short length of the psychiatric evaluation unit of her local hospital. "Where's my manuscript? Where's my pen? Dr. Spock is obsolete! Child-raising, child-rearing, experts, experts, and more experts! I'm rewriting it all, for mothers everywhere! Revamping patriarchal society's version of bringing up baby. It takes a village, I know that much, Hillary Clinton. They're expecting me in Washington, and I've got work to do, I'm the one for the job!"
Mark, Audrey's husband... His eyes were red-rimmed from lack of sleep. A social worker with the hospital's psychiatric crisis service watched Audrey... "I've never seen her get this bad," Mark told her....
Mark stood by helplessly. He knew it was useless to try to reason with Audrey...
Audrey Samson was raised in a midwestern university town...
(her father): Always mercurial, however, he could just as easily be exuberantly charming and funny... barely taking a break...
...Audrey was a driven student, even as a young girl... her drive toward achievement seemed endless...
...By mid-semester, she was sleeping 14 to 16 hours per day...
For the remainder of her college years, Audrey resumed her energetic pace, much to her advantage.....boundless energy...
From the schizophrenia chapter:
On first appearance, Roger Larkin looked and sounded like an average 25 year old.... Still, she remembered him as basically a healthy and "normal" baby.His infancy was uneventful, and he met important developmental milestones, such as learning to crawl, walk, and talk, on time. He was fussy in that he did not care to be held very much, but in most other regards he seemed no different from other infants......
As a boy, Roger was considered by his parents and teachers to be somewhat odd and isolative. He often had a "spacey" quality about him, tending to daydream in class and drift off into his own world. He kept to himself most of the time.
... He spent a great deal of time by himself. He began keeping an elaborate notebook, filling it with writings, drawings, and poems.
...She also hoped that moving away from home might help break Roger out of his solitary shell
...By November, Roger had made no friends and was helplessly behind in his schoolwork...He kept as his sole companion his notebook, writing for hours at a time...
https://www.mikeportnoy.com/aboutmike/faq/answers/13.aspx#215"We knew once we had that we needed to come up with a concept that would tie it all together, so John and I came up with this idea of creating six different characters and each of us would write about three of them. So I wrote about three and John wrote about three. Basically, it's almost like a tour through an insane asylum where people are dealing with mental anguish, manic depression, and issues like that. So we created six different characters and tried to look at their different stories and differences in their lives, but yet the common thread that binds them all together."