| delusion | A false belief, seen most often in psychosis (for example schizophrenia). (27 Sep 1997) |
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| delusion of control | Delusion of being controlled, a delusion 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. Synonym: delusion of passivity. (05 Mar 2000) |
| delusion of grandeur | A delusion in which one believes himself possessed of great wealth, intellect, importance and/or power, a common feature of schizophrenia. (27 Sep 1997) |
| delusion of negation | A delusion in which one imagines that the world and all that relates to it have ceased to exist. Synonym: nihilistic delusion. (05 Mar 2000) |
| delusion of passivity | Delusion of being controlled, a delusion 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. Synonym: delusion of passivity. (05 Mar 2000) |
| delusion of persecution | A false notion that one is being persecuted, characteristic symptom of paranoid schizophrenia. (27 Sep 1997) |
| delusion of reference | A delusional idea that external events, etc., refer to the self. (05 Mar 2000) |
| delusional | Of or pertaining to delusions; as, delusional monomania. Source: Websters Dictionary (01 Mar 1998) |
| delusional disorder | A severe mental disorder characterised by the presence of delusions. The delusions may be related to paranoid, grandiose, somatic, or erotic themes. (05 Mar 2000) |
| delusional powers or abilities | Fixed false beliefs, which are not amenable to arguments or facts to the contrary and which are not shared by others of similar cultural background. A characteristic of schizophrenia. (27 Sep 1997) |
| delusions | A false belief regarding the self or persons or objects outside the self that persists despite the facts, and is not considered tenable by one's associates. (12 Dec 1998) |
| grandiose delusion | A delusion in which one believes himself possessed of great wealth, intellect, importance and/or power, a common feature of schizophrenia. (27 Sep 1997) |
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| somatic delusion | A delusion having reference to a nonexistent lesion or alteration of some organ or part of the body; sometimes indistinguishable from hypochondriasis. (05 Mar 2000) |
| nihilistic delusion | A delusion in which one imagines that the world and all that relates to it have ceased to exist. Synonym: nihilistic delusion. (05 Mar 2000) |
| systematised delusion | A delusion that is logically constructed from a false premise and embraces a specific sector of the patient's life. (05 Mar 2000) |
| encapsulated delusion | A delusion that usually relates to one specific topic or belief but does not pervade an individual's life or level of functioning. (05 Mar 2000) |
| expansive delusion | A delusion in which one believes himself possessed of great wealth, intellect, importance and/or power, a common feature of schizophrenia. (27 Sep 1997) |
| unsystematised delusion | One of a group of apparently discrete, disconnected delusion's. (05 Mar 2000) |