Schizophrenia, Disorganized

**Definition:** A type of schizophrenia characterized by frequent incoherence; marked loosening of associations, or grossly disorganized behavior and flat or grossly inappropriate affect that does not meet the criteria for the catatonic type; associated features include extreme social withdrawal, grimacing, mannerisms, mirror gazing, inappropriate giggling, and other odd behavior. (Dorland, 27th ed)

**Tree numbers:** - F03.700.750.350

**Synonyms:** - Hebephrenic Schizophrenia - Schizophrenia, Hebephrenic