- Patients with schizophrenia, autism, schizoaffective disorder, organic mood disorder, obsessive-compulsive disorder, eating disorder, and psychosis. IQ less than 70. Significant chronic medical illness such as diabetes, epilepsy. Pregnancy. Substance abuse in last 3 months. Concurrent psychotherapy. Previous lack of response to adequate treatment with fluoxetine or other SSRI. Current use of psychoactive medication other than lithium or valproate.