...mental illness? ...rather than a brain disease (a MEDICAL condition of the brain). I'm not talking about any other mental illness but these two. The psychotic part is important. Very often, people are diagnosed with one of them and then rediagnosed as the other later. Both of these conditions require antipsychotics depending on severity.

I have been researching the cognitive effects of these conditions and medical tests, such as MRIs, that show brain abnormalities in these individuals. Here is one link http://www.schizophrenia.com/disease.htm

I have had doctors disagree on whether I was Schizophrenic or Bipolar or not.