in the DSM-IV-TR, a sub-type of schizophrenia wherein the person shows prominent psychotic aspects, like delusions, hallucinations, grossly disordered actions, or disordered thinking, but doesn't satisfy the standards for any of the other sub-types of the disorder. The DSM-lll denotation was undistinguishable form schizophrenic disorder.

UNDIFFERENTIATED SCHIZOPHRENIA: "The patient has been diagnosed with undifferentiated schizophrenia."
Cite this page: N., Pam M.S., "UNDIFFERENTIATED SCHIZOPHRENIA," in PsychologyDictionary.org, April 29, 2013, https://psychologydictionary.org/undifferentiated-schizophrenia/ (accessed October 17, 2021).