<prompt> Schizophrenia with the worst prognosisCatatonicParanoidHebephrenicUndifferentiated  <response>: Hebephrenic schizophrenia Key Symptoms: Disorganized speech, behavior often silly shallow and flat or inappropriate affect Order of prognosis from good to bad in Schizophrenia: Catatonic Paranoid Undifferentiated Hebephrenic Simple Reference: Oxford Handbook of psychiatry; 3rd edition; Chapter 6; Schizophrenia and related psychoses 