"Mental or Behavioral Dysfunction"^^ . "A disorder characterized by the acute and sudden development of confusion, illusions, movement changes, inattentiveness, agitation, and hallucinations. Usually, it is a reversible condition.CTCAE" . . "A disorder characterized by CONFUSION; inattentiveness; disorientation; ILLUSIONS; HALLUCINATIONS; agitation; and in some instances autonomic nervous system overactivity. It may result from toxic/metabolic conditions or structural brain lesions. (From Adams et al., Principles of Neurology, 6th ed, pp411-2)MSH2003_2003_05_12" . . "A mental state in which a person is confused, disoriented, and not able to think or remember clearly. The person may also be agitated and have hallucinations, and extreme excitement.NCI-GLOSS" . "Delirium"^^ . "Delirium"^^ . "A usually reversible condition characterized by the acute and sudden development of confusion, illusions, movement changes, inattentiveness, agitation, and hallucinations. Causes include drug abuse, poisoning, infectious processes, and fluid and electrolyte imbalance.NCI" . "DeliriumPTCTCAEE12898" . "Delirium"^^ . . "DeliriumPTNCI" . "C0011206"^^ . "C2981"^^ . "deliriumPTNCI-GLOSSCDR0000450100" .