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The definition and classification of mental disorders are key issues for researchers as well as service providers and those who may be diagnosed. For a mental state to be classified as a disorder, it generally needs to cause dysfunction. [15] Most international clinical documents use the term mental "disorder", while "illness" is also common.
One is a stage on the way to coma, the other on the way to sleep, which is very different. [19] [20] The affected person has a sensation of mental clouding described in the patient's own words as "foggy". [4] One patient said, "I thought it became like misty, in some way... the outlines were sort of fuzzy". [18]
[13] [dubious – discuss] The Diagnostic and Statistical Manual of Mental Disorders (DSM) defines six subtypes of the disorder: erotomanic (belief that someone is in love with one), grandiose (belief that one is the greatest, strongest, fastest, richest, or most intelligent person ever), jealous (belief that one is being cheated on ...
This glossary covers terms found in the psychiatric literature; the word origins are primarily Greek, but there are also Latin, French, German, and English terms. Many of these terms refer to expressions dating from the early days of psychiatry in Europe; some are deprecated, and thus are of historic interest.
Some define disorders of consciousness as any change from complete self-awareness to inhibited or absent self-awareness and arousal. This category generally includes minimally conscious state and persistent vegetative state, but sometimes also includes the less severe locked-in syndrome and more severe but rare chronic coma.
However, there may be differences between cultures in prevalence of MDD due to cultural influences that "challenge the definition and diagnosis of psychiatric disorders", as seen in a study by Parker et al. that researched MDD in Chinese individuals. [10] Depressive disorder (also known as depression) is a common mental disorder. It involves a ...
A lack of distress is another noted negative symptom. [51] A distinction is often made between those negative symptoms that are inherent to schizophrenia, termed primary; and those that result from positive symptoms, from the side effects of antipsychotics, substance use disorder, and social deprivation, termed secondary negative symptoms. [ 52 ]
Bradyphrenia is the slowness of thought common to many disorders of the brain. [1] Disorders characterized by bradyphrenia include Parkinson's disease and forms of schizophrenia consequently causing a delayed response and fatigue. [2]