Description
Delirium is an acute and fluctuating disturbance in attention, awareness, and cognition that develops over hours to days and represents a change from baseline. It is a medical emergency commonly triggered by an underlying medical condition, substance intoxication or withdrawal, medication effect, or multiple factors. Disturbance is not better explained by a neurocognitive disorder and does not occur in the context of severely reduced arousal (e.g., coma).