skip to main content

Hyperactive delirium — DGM MCQ

Instant feedback + full explanation. One question, done properly.

EasyDeliriumHyperactive deliriumDGM

A 78-year-old man is restless and pulling at cannulas two days after abdominal surgery. He is disorientated and his level of alertness fluctuates during the evening. Collateral history confirms he was cognitively intact before admission. Current medicines include morphine and cyclizine. What is the most likely diagnosis?

Educational content. Not a substitute for clinical judgement or local policy.

Reveal the answer and explanation

Correct answer: E — Hyperactive delirium

Acute fluctuating disorientation and inattention after surgery are most consistent with hyperactive delirium. Primary psychiatric disorders do not usually produce fluctuating consciousness; Lewy body dementia is chronic, anxiety does not cause inattention, and bipolar disorder is not the best fit. Agitation is a symptom of delirium, not a diagnosis in itself.

Reference: NICE CG103