delusion


delusion
A false belief or wrong judgment held with conviction despite incontrovertible evidence to the contrary. [L. de-ludo, pp. -lusus, to play false, deceive, fr. ludo, to play]
- d. of control, d. of being controlled a d. in which one experiences one's feelings, impulses, thoughts, or actions as not one's own, but as being imposed on by some external force. SYN: d. of passivity.
- encapsulated d. a d. that usually relates to one specific topic or belief but does not pervade an individual's life or level of functioning.
- expansive d. SYN: d. of grandeur.
- d. of grandeur a d. in which one believes oneself possessed of great wealth, intellect, importance, power, etc. SYN: expansive d., grandiose d..
- grandiose d. SYN: d. of grandeur.
- d. of negation a d. in which one imagines that the world and all that relates to it have ceased to exist. SYN: nihilistic d..
- nihilistic d. SYN: d. of negation.
- organic delusions false beliefs experienced in the delirium associated with dementia in conjunction with traumatic injury to the brain, or an organic change in the brain such as in Alzheimer syndrome, or in cocaine or other drug intoxication.
- d. of passivity SYN: d. of control.
- d. of persecution, persecutory d. a false notion that one is being persecuted; characteristic symptom of paranoid schizophrenia.
- d. of reference a delusional idea that external events, etc., refer to the self.
- somatic d. a d. having reference to a nonexistent lesion or alteration of some organ or part of the body; sometimes indistinguishable from hypochondriasis.
- systematized d. a d. that is logically constructed from a false premise and embraces a specific sector of the patient's life.
- unsystematized d. one of a group of apparently discrete, disconnected delusions.

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de·lu·sion di-'lü-zhən n
1 a) the act of deluding: the state of being deluded
b) an abnormal mental state characterized by the occurrence of psychotic delusions
2) a false belief regarding the self or persons or objects outside the self that persists despite the facts and occurs in some psychotic states compare HALLUCINATION (1), ILLUSION (2a)

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n.
an irrationally held belief that cannot be altered by rational argument. In mental illness it is often a false belief that the individual is persecuted by others, is very powerful, is controlled by others, or is a victim of physical disease (see paranoia). Delusions may be a symptom of schizophrenia, manic-depressive psychosis, or an organic psychosis.

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de·lu·sion (də-looґzhən) [L. delusio, from de from + ludus a game] a false belief that is firmly maintained in spite of incontrovertible and obvious proof or evidence to the contrary and in spite of the fact that other members of the culture do not share the belief. delusional adj

Medical dictionary. 2011.

Synonyms:

Look at other dictionaries:

  • delusion — delusion, illusion overlap in meaning because both are to do with things wrongly believed or thought for various reasons. There is, however, a distinguishing principle: a delusion is a wrong belief regarded from the point of view of the person… …   Modern English usage

  • Delusion — De*lu sion . [L. delusio, fr. deludere. See {Delude}.] 1. The act of deluding; deception; a misleading of the mind. Pope. [1913 Webster] 2. The state of being deluded or misled. [1913 Webster] 3. That which is falsely or delusively believed or… …   The Collaborative International Dictionary of English

  • delusion — delusion, illusion, hallucination, mirage denote something which is believed to be or is accepted as being true or real but which is actually false or unreal. Delusion in general implies self deception or deception by others; it may connote a… …   New Dictionary of Synonyms

  • délusion — ⇒DÉLUSION, subst. fém. A. PSYCH. Synon. de délire (cf. POROT 1960). B. PSYCHOL. Erreur de perception dans laquelle un objet réel induit la connaissance. L entendement humain et mortel (...) comme la somme de toutes les délusions (Philos., Relig …   Encyclopédie Universelle

  • delusion — index artifice, bad faith, deception, error, fallacy, false pretense, figment, hoax, insanity …   Law dictionary

  • delusión — f. *Ilusión: engaño de los sentidos. * * * delusión. f. ilusión (ǁ concepto o imagen sin verdadera realidad) …   Enciclopedia Universal

  • delusion — act of misleading someone, early 15c.; as a form of mental derangement, 1550s, from L. delusionem (nom. delusio) a deceiving, from pp. stem of deludere (see DELUDE (Cf. delude)). Technically, delusion is a belief that, though false, has been… …   Etymology dictionary

  • delusion — [di lo͞o′zhən] n. [ME delusioun < LL delusio < delusus, pp. of deludere] 1. a deluding or being deluded 2. a false belief or opinion 3. Psychiatry a false, persistent belief maintained in spite of evidence to the contrary delusional adj.… …   English World dictionary

  • Delusion — (lat.), Verspottung, Täuschung; delusorisch, täuschend, trügerisch …   Meyers Großes Konversations-Lexikon

  • delusion — [n] misconception, misbelief apparition, blunder, casuistry, chicanery, daydream, deception, deceptiveness, dream, eidolon, error, fallacy, false impression, fancy, fantasy, figment*, fool’s paradise*, ghost, hallucination, head trip*, ignis… …   New thesaurus

  • delusión — f. ilusión (ǁ concepto o imagen sin verdadera realidad) …   Diccionario de la lengua española


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