hallucination

(noun)

A sensory perception of something that does not exist, arising from disorder of the nervous system, as in delirium tremens; a delusion.

Related Terms

  • delusion
  • neurotransmitters
  • neurotransmitter
  • dopamine

Examples of hallucination in the following topics:

  • The Schizophrenia Spectrum

    • The "two additional symptoms" can be delusions, hallucinations, disorganized speech, or a negative symptom or severely disorganized or catatonic behavior.
    • If delusions or hallucinations or severe, only one symptom may be sufficient for diagnosis.
    • Common symptoms of schizoaffective disorder include hallucinations, paranoid delusions, and disorganized speech and thinking.
    • Delusional disorder is a psychiatric condition in which the person presents with delusions but no accompanying hallucinations, thought disorder, mood disorder, or significant flattening of affect.
    • Auditory and visual hallucinations cannot be prominent, though olfactory or tactile hallucinations related to the content of the delusion may be present.
  • Plant Defenses Against Herbivores

    • Ingestion can cause nausea, vomiting, hallucinations, convulsions, or death.
    • Ingestion can cause nausea, vomiting, hallucinations, convulsions, or death.
  • Ergot Poisoning

    • The convulsive symptoms include seizures and effects on the central nervous system that range from hallucinations to psychotic episodes.
  • Mental Health

    • This lithograph illustrates the eight mental health disorders that were thought to be prominent in England during the early-19th century: dementia, megalomania, acute mania, melancholia, idiocy, hallucination, erotic mania, and paralysis.
  • Introduction to Biomedical Therapies

    • For example, an individual with schizophrenia who is bombarded with visual or auditory hallucinations may find it difficult to focus in psychotherapy; with medication, the individual's hallucinations can be eliminated or reduced to a level that allows the individual to benefit from psychotherapy.
  • Influences of Culture and Gender in Psychotherapy

    • In some cultures, for example, hallucinations are considered a form of spiritual communication; those who experience hallucinations are respected or even revered, rather than labeled "crazy."
  • Introduction to Sleep

    • We also know that extended sleeplessness can lead to hallucinations, delusions, loss of immune function, and in extreme cases, death.
    • Sleep deprivation can cause both physical and mental illness, such as diabetes, depression, and psychosis, and in extreme cases, it can cause hallucinations and death.
  • Pharmacotherapy (Medication)

    • The first three groups of medications target specific problems such as mania or hallucinations.
    • For example, an individual with schizophrenia who is bombarded with visual, auditory, or other hallucinations, may find it difficult to focus in psychotherapy.
    • With medication, the individual's hallucinations can be eliminated or reduced to a level at which the individual can benefit from psychotherapy.
  • Organ Toxicity

    • This can lead to any number of psychological effects from mild cognitive dysfunction (brain fog) to more severe effects, such as hallucinations and suicidal thoughts.
  • Rabies

    • Late stage symptoms extend to paranoia, terror, mania, and hallucinations progressing into delirium .
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