Psychotic Disorders

Diagnosis > Psychotic Disorders


Characterised by:

  • Positive Symptoms:

    • Delusions - especially of control, influence, passivity (perceiving that one's thoughts, feelings or actions are being controlled by some outside agency or person)

    • Hallucinations - often auditory in nature. May give a running commentary, or discuss the patient

    • Thought disorder

    • Catatonic symptoms

  • Negative Symptoms:

    • Blunted affect

    • Alogia

    • Anhedonia

    • Avolition


Schizoaffective Disorder

Symptoms of an affective disorder and schizophrenia are present in approximately an equal proportion.


Schizotypal Disorder

Classified along with schizophrenia and related disorders in ICD-10, but as a personality disorder in DSM-V. Characterised by social and interpersonal difficulties associated with unusual interests and beliefs and perceptual distortions.


Delusional Disorder

Persistent delusions are the most conspicuous clinical characteristic. Clear and persistent hallucinations and schizophrenic symptoms such as passivity, thought disorder and affective blunting are incompatible with diagnosis.


Click here to watch "Psychiatric Interviews for Teaching: Psychosis" - a video created by The University of Nottingham.