Other Paranoid Psychoses

Persistent delusional disorder

  • Systematised, fixed delusions are the major or only feature

Schizotypal disorder

  • A disorder chracterised by eccentric behaviour and anomalies of thinking and affect which resemble those seen in SZ, though no definate and characteristic SZ anomalies occur at any stage
  • The symptoms may include a cold or inappropriate affect, anhedonia, odd or eccentric bhaviour, a tendency to social withdrawal, paranoid or bizarre ideas not amounting to true delisions, obsessive episodes which intense illusios, auditory or other hallucinaions and delusion-like ideas, usually occuring without external provocation

Acute and transient psychotic disorder

  • SZ-like symptoms, lasting one month

Increased delusional disorder

  • Folie a deux, folie a pusiers

Schizoaffective disorder

  • Episodic disorders in which both affective and SZ symptoms are prominent but which do not justify a diagnosis of either SZ or depressive or manic episodes