DSM-IV:

"Catatonic schizophrenia is one of several types of schizophrenia, a chronic mental illness in which a person loses touch with reality "

~Delusions

~Hallucinations

~Disorganized speech, such as frequent derailment or incoherence

~Grossly disorganized or catatonic behavior

~Negative symptoms, such as affective flattening, alogia, or avolition