My Mother once told me of a story of when she was a kid (would have been in the late 1950's I think), when a serious illness was going around the town where she grew up, and she got it. While feverish, she had a dream where she was bargaining with Satan for the soul of one of her uncles. She obviously survived, but when she returned to school she began hearing voices telling her to do things. She did her best to ignore the voices, and eventually they went away.
My mother is a religious person (now a retired clergy herself), but she always tries to find the middle ground between religion and science. She recognizes that the fever probably left her mind a bit weak, allowing for the brief and minor episode to manifest itself, but she also believes that Satan uses open doors like that to spread into the minds of the vulnerable. I can't say that I entirely disagree with her, but I also wouldn't support the conclusion that anyone experiencing schizophrenia is being invaded by Satan. Pills help the mind in a medical way, but therapy helps in a functional way, and the support of religion (when not being misused) could be argued as being like therapy with a faith element.
I'm not trying to stir up a religion VS. science debate, or detract from the theme of this thread. I just felt like sharing this story.