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Nihilistic delusion
Nihilistic delusion The delusion of nonexistence of the self or part of the self, or of some object in external reality.
RELATED TERMS--------------------------------------
Delusion
A false belief based on incorrect inference about external reality that is firmly sustained despite what almost everyone else believes and despite what constitutes incontrovertible and obvious proof or evidence to the contrary. The belief is not one ordinarily accepted by other members of the person's culture or subculture (e.g., it is not an article of religious faith). When a false belief involves a value judgment, it is regarded as a delusion only when the judgment is so extreme as to defy credibility. Delusional conviction occurs on a continuum and can sometimes be inferred from an individual's behavior. It is often difficult to distinguish between a delusion and an overvalued idea (in which case the individual has an unreasonable belief or idea but does not hold it as firmly as is the case with a delusion). Delusions are subdivided according to their content. Some of the more common types are: bizarre; delusional jealousy; grandiose; delusion of reference; persecutory; somatic; thought broadcasting; thought insertion.
SIMILAR TERMS--------------------------------------
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Nephropyelitis
Inflammation of the kidney and renal pelvis often by ascending bacterial infection.
Negative symptoms
Most commonly refers to a group of symptoms characteristic of schizophrenia that include loss of fluency and spontaneity of verbal expression, impaired ability to focus or sustain attention on a particular task, difficulty in initiating or following through on tasks, impaired ability to experience pleasure to form emotional attachment to others, and blunted affect.
Negativism
Opposition or resistance, either covert or overt, to outside suggestions or advice. May be seen in schizophrenia.
Neologism
In psychiatry, a new word or condensed combination of several words coined by a person to express a highly complex idea not readily understood by others; seen in schizophrenia and organic mental disorders.
Neurotic disorder
A mental disorder in which the predominant disturbance is a distressing symptom or group of symptoms that one considers unacceptable and alien to one's personality. There is no marked loss of reality testing ; behavior does not actively violate gross social norms, although it may be quite disabling. The disturbance is relatively enduring or recurrent without treatment and is not limited to a mild transitory reaction to stress. There is no demonstrable organic etiology.
Nihilistic delusion
Narcissistic
"Self-centered, being ""in love"" with oneself."
Nebulizer
A device that produces a very fine vapor to be inhaled.
Nematode
A roundworm that may infest the digestive tract of humans.
Nephritis
Inflammation of a kidney.
Nephrosis
A disease of the kidney that causes malfunction but no inflammation. Also called nephrotic syndrome.
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