T.J. Crow proposed a classification of schizophrenia patients into type I and type II. Type II schizophrenia is characterised by all, EXCEPT:
Negative symptoms
Poor response to medications
Disorganised behaviour
CT scan abnormal
Individuals grouped as having type II schizophrenia manifest predominantly negative symptomatology, do not respond well to medications, and have an illness course characterized by insidious onset and poor long-term outcome. Structural brain abnormality such as reduced cerebral volume also seen with type II. Ref: Schizophrenia: Cognitive Theory, Research, and Therapy By Aaron T. Beck, Neil A. Rector, Neal Stolar, Paul Grant, 2011, Page 5.