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Pseudohallucination. A pseudohallucination (from Ancient Greek: ψευδής (pseudḗs) "false, lying" + "hallucination") is an involuntary sensory experience vivid enough to be regarded as a hallucination, but which is recognised by the person experiencing it as being subjective and unreal. By contrast, a "true" hallucination is perceived as ...
In psychology, false memory syndrome (FMS) was a proposed "pattern of beliefs and behaviors" [1] in which a person's identity and relationships are affected by false memories of psychological trauma, recollections which are strongly believed by the individual, but contested by the accused. [2] False memory syndrome was proposed to be the result ...
Hallucinogen persisting perception disorder (HPPD) is a non-psychotic disorder in which a person experiences apparent lasting or persistent visual hallucinations or perceptual distortions after using drugs, [1] including but not limited to psychedelics, dissociatives, entactogens, tetrahydrocannabinol (THC), and SSRIs. [2][3] Despite being ...
A self-disorder, also called ipseity disturbance, is a psychological phenomenon of disruption or diminishing of a person's minimal self – the fundamental sense that one's experiences are truly one's own. People with self-disorder feel that their internal experiences are actually external; for example, they may experience their own thoughts as ...
A hallucination is a perception in the absence of an external stimulus that has the compelling sense of reality. [4] Hallucination is a combination of two conscious states of brain: wakefulness and REM sleep. [5] They are distinguishable from several related phenomena, such as dreaming (REM sleep), which does not involve wakefulness ...
Ideas of reference and delusions of reference describe the phenomenon of an individual experiencing innocuous events or mere coincidences [1] and believing they have strong personal significance. [2] It is "the notion that everything one perceives in the world relates to one's own destiny", usually in a negative and hostile manner.
Personality disorders (PD) are a class of mental disorders characterized by enduring maladaptive patterns of behavior, cognition, and inner experience, exhibited across many contexts and deviating from those accepted by the individual's culture. [1] These patterns develop early, are inflexible, and are associated with significant distress or ...
Schizoid personality disorder (/ ˈskɪtsɔɪd, ˈskɪdzɔɪd, ˈskɪzɔɪd /, often abbreviated as SzPD or ScPD) is a personality disorder characterized by a lack of interest in social relationships, [9] a tendency toward a solitary or sheltered lifestyle, secretiveness, emotional coldness, detachment, and apathy.