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pachyderm: Actually, I think this is being more accepted now than in the past. Or am I overly optimistic?

It seems to depend on the circles one moves in. There are some who still attribute psychosis solely to a genetic neurological default and in some cases this may be true -- brain tumors, for example, can produce psychosis. However there are multiple causes of psychosis and many people are willing to recognize that stress and trauma (this doesn't have to be child abuse) seem to play a significant role in the development of psychotic states of consciousness.

Meantime... whispers, I bumped forward an old discussion related to schizophrenia and PTSD. There may be some additional information there that might be helpful to you.