Changes

==Etymology==

==Etymology==

[http://nordan.daynal.org/wiki/index.php?title=English#ca._1100-1500_.09THE_MIDDLE_ENGLISH_PERIOD Middle English], from Late Latin delusion-, delusio,  from deludere

[https://nordan.daynal.org/wiki/index.php?title=English#ca._1100-1500_.09THE_MIDDLE_ENGLISH_PERIOD Middle English], from Late Latin delusion-, delusio,  from deludere

*Date: [http://www.wikipedia.org/wiki/15th_Century 15th century]

*Date: [https://www.wikipedia.org/wiki/15th_Century 15th century]

==Definitions==

==Definitions==

*1 : the [[act]] of deluding : the [[state]] of being deluded

*1 : the [[act]] of deluding : the [[state]] of being deluded

A '''delusion''', in everyday [[language]], is a fixed [[belief]] that is either [[false]], fanciful, or derived from [[deception]]. Psychiatry defines the term more specifically as a [[belief]] that is pathological (the result of an illness or illness [[process]]). As a pathology, it is distinct from a [[belief]] based on false or incomplete [[information]], [[dogma]], stupidity, apperception, [[illusion]], or other effects of [[perception]].

A '''delusion''', in everyday [[language]], is a fixed [[belief]] that is either [[false]], fanciful, or derived from [[deception]]. Psychiatry defines the term more specifically as a [[belief]] that is pathological (the result of an illness or illness [[process]]). As a pathology, it is distinct from a [[belief]] based on false or incomplete [[information]], [[dogma]], stupidity, apperception, [[illusion]], or other effects of [[perception]].

Delusions typically occur in the [[context]] of neurological or [[mental]] [[Disease|illness]], although they are not tied to any particular [[disease]] and have been found to occur in the [[context]] of many pathological [[states]] (both [[physical]] and [[mental]]). However, they are of particular [[diagnostic]] importance in psychotic disorders and particularly in [http://en.wikipedia.org/wiki/Schizophrenia schizophrenia], [http://en.wikipedia.org/wiki/Paraphrenia paraphrenia], manic episodes of [http://en.wikipedia.org/wiki/Bipolar_disorder bipolar disorder], and psychotic [[depression]].

Delusions typically occur in the [[context]] of neurological or [[mental]] [[Disease|illness]], although they are not tied to any particular [[disease]] and have been found to occur in the [[context]] of many pathological [[states]] (both [[physical]] and [[mental]]). However, they are of particular [[diagnostic]] importance in psychotic disorders and particularly in [https://en.wikipedia.org/wiki/Schizophrenia schizophrenia], [https://en.wikipedia.org/wiki/Paraphrenia paraphrenia], manic episodes of [https://en.wikipedia.org/wiki/Bipolar_disorder bipolar disorder], and psychotic [[depression]].

Although non-specific [[concepts]] of madness have been around for several thousand years, the psychiatrist and [[philosopher]] [http://en.wikipedia.org/wiki/Karl_Jaspers Karl Jaspers] was the first to define the three main criteria for a [[belief]] to be considered delusional in his 1917 book ''General Psychopathology''. These criteria are:

Although non-specific [[concepts]] of madness have been around for several thousand years, the psychiatrist and [[philosopher]] [https://en.wikipedia.org/wiki/Karl_Jaspers Karl Jaspers] was the first to define the three main criteria for a [[belief]] to be considered delusional in his 1917 book ''General Psychopathology''. These criteria are:

* [[certainty]] (held with [[absolute]] [[conviction]])

* [[certainty]] (held with [[absolute]] [[conviction]])