An outdated, catch-all diagnosis when symptoms are difficult to classify Medically reviewed by Michael MacIntyre, MD Undifferentiated schizophrenia is an outdated term for a type of schizophrenia with ...

In DSM-I (APA, 1952) there were two diagnoses characterized primarily by detachment: (a) simple schizophrenia, based on a syndrome defined by Bleuler and (b) schizoid personality, a syndrome derived ...

Schizophrenia is a complex mental health disorder characterized by a disconnect from reality. People with schizophrenia experience a variety of symptoms, including hallucinations, delusions, ...