Delusional disorder vs late-onset schizophrenia (elderly)

HIGH-YIELD Appears 9×

Teaching point

Single fixed NON-bizarre delusion (persecution/poisoning) + PRESERVED function + lives independently + NO hallucinations/thought disorder -> delusional disorder. Add prominent auditory hallucinations (classically with sensory deprivation e.g. hearing loss) and functional decline -> late-onset schizophrenia.

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