Psychiatry · Pathway 2

Schizoaffective & Delusional Disorders

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Key points

Schizoaffective disorder: prominent mood episode CONCURRENT with schizophrenic symptoms (not sequential).
Delusional disorder: fixed, non-bizarre delusion(s) ≥ 1 month with otherwise relatively preserved function; no prominent hallucinations.
Subtypes: persecutory (commonest), grandiose, jealous (Othello syndrome), erotomanic (De Clérambault's), somatic.
Othello syndrome: delusion of partner's infidelity — risk of violence to partner.
Capgras syndrome: delusion that a close relative has been replaced by an identical impostor (also seen in organic conditions).