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  2. Hallucinogen - Wikipedia

    en.wikipedia.org/wiki/Hallucinogen

    LSD, mescaline, psilocybin, and PCP are drugs that cause hallucinations, which can alter a person's perception of reality. LSD, mescaline, and psilocybin cause their effects by initially disrupting the interaction of nerve cells and the neurotransmitter serotonin. [ 67 ]

  3. Hallucinogen persisting perception disorder - Wikipedia

    en.wikipedia.org/wiki/Hallucinogen_persisting...

    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.

  4. Substance-induced psychosis - Wikipedia

    en.wikipedia.org/wiki/Substance-induced_psychosis

    Substance-induced psychosis (commonly known as toxic psychosis or drug-induced psychosis) is a form of psychosis that is attributed to substance intoxication, withdrawal or recent consumption of psychoactive drugs. It is a psychosis that results from the effects of various substances, such as medicinal and nonmedicinal substances, legal and ...

  5. Visual hallucination - Wikipedia

    en.wikipedia.org/wiki/Visual_hallucination

    The content of hallucinations varies as well. Preliminary research has found that most individuals had multiple types of visual hallucinations. [20] Scenes involving people and/or animals were the most common, followed by simple geometric images. [4] Complex (formed) visual hallucinations are more common than Simple (non-formed) visual ...

  6. Hallucination - Wikipedia

    en.wikipedia.org/wiki/Hallucination

    A hallucination is a perception in the absence of an external stimulus that has the compelling sense of reality. [6] They are distinguishable from several related phenomena, such as dreaming (), which does not involve wakefulness; pseudohallucination, which does not mimic real perception, and is accurately perceived as unreal; illusion, which involves distorted or misinterpreted real ...

  7. Stimulant psychosis - Wikipedia

    en.wikipedia.org/wiki/Stimulant_psychosis

    The symptoms of stimulant psychosis vary depending on the drug ingested, but generally involve the symptoms of organic psychosis such as hallucinations, delusions, or paranoia. [ 3 ] [ 4 ] [ 5 ] Other symptoms may include mania , erratic behavior, agitation and/or aggression .

  8. Psychedelic drug - Wikipedia

    en.wikipedia.org/wiki/Psychedelic_drug

    Tryptamines are well documented to cause classic psychedelic states, such as increased empathy, visual distortions (drifting, morphing, breathing, melting of various surfaces and objects), auditory hallucinations, ego dissolution or ego death with high enough dose, mystical, transpersonal and spiritual experiences, autonomous "entity ...

  9. Illusory palinopsia - Wikipedia

    en.wikipedia.org/wiki/Illusory_palinopsia

    Illusory palinopsia is a dysfunction in visual perception, presumably related to diffuse neuronal excitability alterations in the anterior and posterior visual pathways. [19] Because of the drugs that cause illusory palinopsia, 5-HT2a receptor excitotoxicity or a disruption of GABAergic transmission

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