Neuroscience

Omega-3 may block psychosis years later, study finds

Omega-3, a fatty acid found in oily fish, may prevent the onset of schizophrenia and other psychotic disorders long after being consumed, according to a study released Tuesday.

Psychology & Psychiatry

Scientists zeroing in on psychosis risk factors

During the first phase of a major national study, scientists have uncovered a new cluster of preclinical symptoms linked to a significant increase in the risk that a young person will go on to develop a psychotic illness, ...

Psychology & Psychiatry

A risk gene for cannabis psychosis

The ability of cannabis to produce psychosis has long been an important public health concern. This concern is growing in importance as there is emerging data that cannabis exposure during adolescence may increase the risk ...

Psychology & Psychiatry

Psychosis incidence highly variable internationally

Rates of psychosis can be close to eight times higher in some regions compared to others, finds a new study led by researchers at UCL, King's College London and the University of Cambridge.

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Psychosis (from the Greek ψυχή "psyche", for mind/soul, and -ωσις "-osis", for abnormal condition) means abnormal condition of the mind, and is a generic psychiatric term for a mental state often described as involving a "loss of contact with reality". People suffering from psychosis are described as psychotic. Psychosis is given to the more severe forms of psychiatric disorder, during which hallucinations and delusions and impaired insight may occur. Some professionals say that the term psychosis is not sufficient as some illnesses grouped under the term "psychosis" have nothing in common (Gelder, Mayou & Geddes 2005).

The terms psychosis and psychotic are very broad and can mean anything from relatively normal aberrant experiences through to the florid and catatonic expressions of schizophrenia and bipolar type 1 disorder Despite this, psychosis is a term generally given to noticeable deficits in normal behavior (known as deficit or negative signs) or more commonly to the florid experiences of hallucinations or delusional beliefs. People experiencing psychosis may exhibit 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. It is also important to note that psychosis usually refers to negative expressions, that is paranoia, stereotypy etc. rather than ecstatic experience such as religious ecstasy, though with such a broad term, there are no hard and fast rules.

A wide variety of central nervous system diseases, from both external poisons and internal physiologic illness, can produce symptoms of psychosis.

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