Definitions for Deliriumdɪˈlɪər i əm; -ˈlɪər i ə

This page provides all possible meanings and translations of the word Delirium

Princeton's WordNet

  1. craze, delirium, frenzy, fury, hysteria(noun)

    state of violent mental agitation

  2. delirium(noun)

    a usually brief state of excitement and mental confusion often accompanied by hallucinations


  1. delirium(Noun)

    A temporary mental state with a sudden onset, usually reversible, including symptoms of confusion, inability to concentrate, disorientation, anxiety, and sometimes hallucinations. Causes can include dehydration, drug intoxication, and severe infection.

  2. Origin: From the delirium, from deliro.

Webster Dictionary

  1. Delirium(noun)

    a state in which the thoughts, expressions, and actions are wild, irregular, and incoherent; mental aberration; a roving or wandering of the mind, -- usually dependent on a fever or some other disease, and so distinguished from mania, or madness

  2. Delirium(noun)

    strong excitement; wild enthusiasm; madness


  1. Delirium

    Delirium, or acute confusional state, is a syndrome that presents as severe confusion and disorientation, developing with relatively rapid onset and fluctuating in intensity. It is a syndrome which occurs more frequently in people in their later years. Delirium represents an organically caused decline from a previously-attained baseline level of cognitive function. It is typified by fluctuating course, attentional deficits and generalized severe disorganization of behavior. It typically involves other cognitive deficits, changes in arousal, perceptual deficits, altered sleep-wake cycle, and psychotic features such as hallucinations and delusions. Delirium itself is not a disease, but rather a clinical syndrome, which result from an underlying disease, from medications administered during treatment of that disease in a critical phase, from a new problem with mentation or from varying combinations of two or more of these factors. It is a corollary of the criteria that a diagnosis of delirium cannot be made without a previous assessment, or knowledge, of the affected person's baseline level of cognitive function. In other words, a mentally disabled or demented person who is operating at their own baseline level of mental ability would be expected to appear delirious without a baseline mental functional status against which to compare.

U.S. National Library of Medicine

  1. Delirium

    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)

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