What is delirium, and can you provide an example of it?

Delirium is a sudden and severe state of confusion and rapid changes in brain function, often caused by an underlying physical illness, drug effects, or withdrawal. It affects attention, awareness, and cognition. A practical example is alcohol withdrawal delirium, also known as delirium tremens. This can occur in individuals who are heavily dependent on alcohol and suddenly stop or significantly reduce their intake. Symptoms can include severe confusion, disorientation, hallucinations (seeing or hearing things that aren't there), tremors, agitation, and rapid heart rate. That's 2 down. 3 left today — send the next one.