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  2. Psychoactive drug - Wikipedia

    en.wikipedia.org/wiki/Psychoactive_drug

    A psychoactive drug, mind-altering drug, or consciousness-altering drug is a chemical substance that changes brain function and results in alterations in perception, mood, consciousness, cognition, or behavior. [ 1 ] The term psychotropic drug is often used interchangeably, while some sources present narrower definitions.

  3. Caffeine - Wikipedia

    en.wikipedia.org/wiki/Caffeine

    Caffeine. Caffeine is a central nervous system (CNS) stimulant of the methylxanthine class and is the most commonly consumed psychoactive substance globally. [9][10] It is mainly used for its eugeroic (wakefulness promoter), ergogenic (physical performance enhancing), or nootropic (cognition improving) properties. [11][12] Caffeine acts by ...

  4. Caffeine dependence - Wikipedia

    en.wikipedia.org/wiki/Caffeine_dependence

    Psychiatry. Caffeine dependence is a condition characterized by a set of criteria, including tolerance, withdrawal symptoms, persistent desire or unsuccessful efforts to control use, and continued use despite knowledge of adverse consequences attributed to caffeine. [1] It can appear in physical dependence or psychological dependence, or both.

  5. Caffeinism - Wikipedia

    en.wikipedia.org/wiki/Caffeinism

    Caffeinism is a state of intoxication caused by excessive consumption of caffeine. This intoxication covers a variety of unpleasant physical and mental symptoms associated with the consumption of excessive amounts of caffeine. [1] Caffeine is considered one of the most widely consumed drugs around the world. Around 80% of the world population ...

  6. Caffeine-induced psychosis - Wikipedia

    en.wikipedia.org/wiki/Caffeine-induced_psychosis

    Caffeine-induced psychosis is a relatively rare phenomenon that can occur in otherwise healthy people. Overuse of caffeine may also worsen psychosis in people suffering from schizophrenia. [1] It is characterized by psychotic symptoms such as delusions, paranoia, and hallucinations. [2][3] This can happen with ingestion of high doses of ...

  7. Stimulant - Wikipedia

    en.wikipedia.org/wiki/Stimulant

    Caffeine is a stimulant compound belonging to the xanthine class of chemicals naturally found in coffee, tea, and (to a lesser degree) cocoa or chocolate. It is included in many soft drinks, as well as a larger amount in energy drinks. Caffeine is the world's most widely used psychoactive drug and by far the most common stimulant.

  8. Substance-induced psychosis - Wikipedia

    en.wikipedia.org/wiki/Substance-induced_psychosis

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

  9. Caffeine-induced anxiety disorder - Wikipedia

    en.wikipedia.org/wiki/Caffeine-induced_anxiety...

    Caffeine-induced anxiety disorder. Caffeine-induced anxiety disorder is a subclass of the DSM-5 diagnosis of substance/medication-induced anxiety disorder. [1] Consumption of caffeine has long been linked to anxiety. [2] The effects of caffeine and the symptoms of anxiety both increase activity within the sympathetic nervous system.