A. At least two of the following for a significant portion of the time during a one-month period:
3. Disorganized speech
4. Grossly disorganized or catatonic behavior
5. Negative symptoms (e.g., flat affect)
B. Level of functioning is markedly below level at onset of symptoms.
C. Disturbance persists at least six months.
D. Schizoaffective, depressive, and bipolar disorder ruled out.
E. Symptoms not attributable to the effects of a substance.
F. If there is a history of autism spectrum disorder or a communication disorder of childhood onset, a schizophrenia diagnosis is made only if prominent delusions or hallucinations are present for at least one month.
- First episode, currently in acute episode
- First episode, currently in partial remission
- First episode, currently in full remission
- Multiple episodes (acute, partial, or full remission)
- With catatonia
For further reading, including risk factors and treatment, take a look at http://www.nimh.nih.gov/health/topics/schizophrenia/index.shtml