Delirium

ARTICLE SECTIONS

Introduction Signs and symptoms Causes When to seek medical advice

Screening and diagnosis Complications Treatment Prevention

Introduction

The word "delirium" hints at the state of feverish ecstasy that fuels artistic creation and spiritual awakening. But delirium is actually a clearly defined medical condition — and it's frightening, not exciting.

Delirium is a decline in attention, awareness and mental clarity often triggered by serious illness. The signs of delirium may include restlessness, agitation and combativeness. Often, though, delirium looks like drowsiness and indifference to your surroundings.

Delirium occurs in about one-third of hospitalized people over age 65, and in more than 70 percent of older people in intensive care units. In spite of its frequency, delirium often goes unrecognized, especially in people with dementia.

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Signs and symptoms