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Longman Dictionary of Contemporary English
▪ Medcalf goes even further, quoting a clinician's opinion that Hoccleve suffered several episodes of a manic form of affective psychosis.
▪ Over 70 percent of both groups were considered psychotic, with rather more men schizophrenic and rather more women suffering affective psychosis.
▪ Thus some investigators have argued that the association is one, not with schizophrenia, but with affective psychosis.
▪ In addition to these signs of affective psychosis Kempe also showed features of schizophrenia, notably hallucinations, occurring in several modalities.
▪ Breier and his colleagues wanted to know which area of the brain was involved in this ketamine psychosis.
▪ Can cause paranoia, psychosis, sterility and flashbacks several years after the drug is taken.
▪ It is described as a psychosis, which is characterised by a distortion in the person's perception of reality.
▪ Over 70 percent of both groups were considered psychotic, with rather more men schizophrenic and rather more women suffering affective psychosis.
▪ Some psychologists contend that even some forms of psychosis are retaliatory in nature.
▪ Such an image, read in psychological terms, would be the image of a psychosis.
▪ There have also been reports of psychosis following overuse.
▪ We seem here to have further evidence of the apparent paradox about creativity and psychosis to which we have referred several times.
The Collaborative International Dictionary

Psychosis \Psy*cho"sis\, n. [NL. See Psycho-.]

  1. Any vital action or activity.

  2. (Med.) A disease of the mind; especially, a functional mental disorder, that is, one unattended with evident organic changes.

Douglas Harper's Etymology Dictionary

1847, "mental derangement," Modern Latin, from Greek psykhe- "mind" (see psyche) + -osis "abnormal condition." Greek psykhosis meant "a giving of life; animation; principle of life."


n. (label en psychology) A severe mental disorder, sometimes with physical damage to the brain, marked by a deranged personality and a distorted view of reality.

  1. n. any severe mental disorder in which contact with reality is lost or highly distorted

  2. [also: psychoses (pl)]


Psychosis refers to an abnormal condition of the mind described as involving a "loss of contact with reality". People with psychosis are described as psychotic. People experiencing psychosis may exhibit some personality changes and thought disorder. Depending on its severity, this may be accompanied by unusual or bizarre behavior, as well as difficulty with social interaction and impairment in carrying out daily life activities.

Psychosis (as a medical sign of a psychiatric disorder) is a diagnosis of exclusion. That is, a new-onset episode of psychosis is not considered a symptom of a psychiatric disorder until other relevant and known causes of psychosis are properly excluded. Medical and biological laboratory tests should exclude central nervous system diseases and injuries, diseases and injuries of other organs, psychoactive substances, and toxins as causes of symptoms of psychosis before any psychiatric illness can be diagnosed. In medical training, psychosis as a sign of illness is often compared to fever since both can have multiple causes that are not readily apparent.

The term "psychosis" is very broad and can mean anything from relatively normal aberrant experiences through to the complex and catatonic expressions of schizophrenia and bipolar type 1 disorder. In properly diagnosed psychiatric disorders (where other causes have been excluded by extensive medical and biological laboratory tests), psychosis is a descriptive term for the hallucinations, delusions and impaired insight that may occur. Psychosis is generally the term given to noticeable deficits in normal behavior (negative signs) and more commonly to diverse types of hallucinations or delusional beliefs, particularly with regard to the relation between self and others as in grandiosity and pronoia or paranoia.

An excess in dopaminergic signalling is hypothesized to be linked to the positive symptoms of psychosis, especially those of schizophrenia. Many antipsychotic drugs accordingly target the dopamine system; however, meta-analyses of placebo-controlled trials of these drugs show either no significant difference in effects between drug and placebo, or a moderate effect size, suggesting that the pathophysiology of psychosis is much more complex than an overactive dopamine system.

Psychosis (video game)

Psychosis (Paranoia in Japan) is a side scrolling shooter type game for the TurboGrafx-16/PC Engine. It was released in 1990 by NAXAT Soft, which also released the games Alien Crush and Devil's Crush (two pinball type games.) When released it was praised for its colorful graphics and original backstory. It was released on the Wii Virtual Console in all nations in 2008.

Psychosis (film)

'Psychosis ' is a 2010 British Horror film directed by Reg Traviss and written by Reg Traviss and story by Michael Armstrong. It is a remake of the "Dreamhouse" episode from the movie anthology Screamtime.

The film was released in the United Kingdom in July 2010 and 11 January 2011 in the USA. The film was budgeted on $1 million.

Psychosis (disambiguation)

Psychosis is a generic psychiatric term for a mental state characterized by loss of contact with reality.

Psychosis or psychotic may also refer to:

  • Brief psychotic disorder, The Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, Text Revision (DSM-IV-TR) describes brief psychotic disorder based primarily on duration of symptoms. DSM-IV defines brief psychotic disorder as an illness lasting from 1 day to 1 month, with an eventual return to the premorbid level of functioning 1
  • Brief reactive psychosis, psychosis which can be triggered by an extremely stressful event in the life of a patient
  • Menstrual psychosis, abnormal behaviour linked to menstruation
  • Manic-depressive psychosis, bipolar disorder, especially the manic episodes thereof, can include psychotic features.
  • Mystical psychosis, a term coined to characterize first-person accounts of psychotic experiences that are strikingly similar to reports of mystical experiences
  • Myxedematous psychosis, a relatively uncommon consequence of hypothyroidism or patients who have had the thyroid surgically removed
  • Occupational psychosis, the concept that one's occupation or career makes that person so biased that they could be described as psychotic
  • Postpartum psychosis, a group of mental illnesses with the sudden onset of psychotic symptoms following childbirth
  • Psychotic break, an occasion of a person experiencing an episode of acute primary psychosis, either for the first time or after a significant period of relative asymptomaticity
  • Psychotic depression, a type of depression that can include symptoms and treatments that are different from those of non-psychotic major depressive disorder
  • Shared psychosis, psychiatric syndrome in which symptoms of a delusional belief are transmitted from one individual to another
  • Stimulant psychosis, a psychotic disorder that appears in some people who abuse stimulant drugs
  • Substance-induced psychosis, a form of substance-related disorder where psychosis can be attributed to substance use
  • Tardive psychosis, a form of psychosis distinct from schizophrenia and induced by the use of current (dopaminergic) antipsychotics by the depletion of dopamine and related to the known side effect caused by their long-term use, tardive dyskinesia
Psychosis (journal)

Psychosis: Psychological, Social and Integrative Approaches is a triannual peer-reviewed medical journal published by Routledge on behalf of the International Society for the Psychological Treatments of the Schizophrenias and other Psychoses. The main scope of the journal is research focused on the psychological treatments of psychosis (e.g. cognitive-behavior therapy, psychodynamic therapy, family therapy etc.) and the psycho-social causes of psychosis (e.g. poverty, drug abuse, child abuse and neglect, distressed families, urban living, discrimination, rape, war combat etc.). It contains original research, systematic reviews, commentaries on contentious articles, short reports, first-persons accounts, a book review section, and a correspondence column relating to the areas of psychiatry and psychology. The journal publishes papers on both quantitative research (e.g. rigorously designed outcome studies and epidemiological surveys) and qualitative research (e.g. case studies of therapy, first-person accounts of psychosis and experiences of people with psychosis in the mental health system), as well as papers focusing on conceptual and ethical issues.

According to the journal's editor-in-chief, John Read, the primary audience is psychiatrists, clinical psychologists, and all professionals with an interest in mental health. It was established in 2009 and is indexed in PsycINFO, EmCare, and Scopus.

Usage examples of "psychosis".

To expose oneself to an archetypical entity was an invitation to be absorbed into it, all conscious identity lost in irreducible psychosis.

All the same I found some books on neuroses and psychoses which made me think.

Out there, they had faced, and been distorted by, their own inner demons, their own fears and frustrations and neuroses and psychoses, but this irrationality gave them great power.

In my college psychology class we briefly studied neurosis and psychosis, and I wondered which of the two I might be experiencing.

This is due to a determined hypothesis that the later stage of the ongoing disease of this Pandemic is that of psychosis simulating in otherwise normal people, that of schizophrenia, paranoia, perhaps violent episodes.

The reintegration of her personality was surely complete by now, but if she had gone completely around the bend into full-blown psychosis, he did not want to risk his own sanity by reading her mind.

This process is equally striking in individual psychosis and in group-dependent psychosis, where traditional forms of moral behavior cease to function in relation to the scapegoat group.

In prescribing this drug, physicians are warned that Ritalin is contraindicated for patients with psychological problems such as depression, psychosis, or chronic fatigue.

Wolf gene pack dynamics, serotonin shutout and Envoy psychosis to pilot the whole fucking shambles.

After this transference of psychoses the victims would be relieved, and the obsessing spirits could then be reached by the advanced spirits, who would care for them and instruct them regarding the higher laws of life.

Electrical discharges in the limbic system sometimes result in symptoms similar to those of psychoses or those produced by psychedelic or hallucinogenic drugs.

That they do not have reactive psychoses and do not suffer from psychotic microepisodes under stress.

Actually, there is a whole sub-field in psychodynamic theories of narcissism, which tries to explain the dynamics of reactive psychoses in pathological narcissism.

Soon he knew about the many forms of schizophrenia, as well as other psychoses, neuroses, paranoias, and an entire alphabet of phobias.

When you took a child like that during the sixties and you added marijuana, it sowed the seeds of the psychosis that most of these radicals are clearly exhibiting today.