delirium An altered state of consciousness in which a person is restless, excitable, hallucinating, and is only partly aware of his or her surroundings. It is seen in high fever, poisoning, drug withdrawal (see delirium tremens), disorders of metabolism, and organ failure. Sedatives and reassurance are basic measures. Related category • HEALTH AND DISEASE Also on this site: Encyclopedia of Alternative Energy & Sustainable Living Encyclopedia of History Transport Concepts & Designs (partner site) |