Table 1.

Sub-types of delirium

HypoactiveCharacterised by reduced motor activity, drowsiness and somnolence. People are withdrawn, and have a lack of interest in eating and drinking.
HyperactiveCharacterised by increased motor activity, agitation and restlessness. People may experience hallucinations or walk around seemingly without purpose. They may have insomnia.
MixedDelirium that fluctuates between hypoactive and hyperactive subtypes.