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Mental breakdown
Mental breakdown (also known as a nervous breakdown) is a general term for an acute, time-limited psychiatric disorder that manifests primarily as severe stress-induced depression, anxiety, or dissociation in a previously functional individual, to the extent that they are no longer able to function on a day-to-day basis until the disorder is resolved. A nervous breakdown is defined by its temporary nature, and often closely tied to psychological burnout, severe overwork, sleep deprivation, and similar stressors, which may combine to temporarily overwhelm an individual with otherwise sound mental functions.
== Definition ==
The terms "nervous breakdown" and "mental breakdown" have not been formally defined through a medical diagnostic system such as the DSM-IV or ICD-10, and are nearly absent from current scientific literature regarding mental illness.〔(Mayo Clinic Mental Breakdown )〕 Although "nervous breakdown" does not necessarily have a rigorous or static definition, surveys of laypersons suggest that the term refers to a specific acute time-limited reactive disorder, involving symptoms such as anxiety or depression, usually precipitated by external stressors.〔 Many health experts today refer to a nervous breakdown as a "modern mental health crisis." 〔(SymptomFind Signs and Symptoms of Nervous Breakdown )〕
Specific cases are sometimes described as a "breakdown" only after the emotional and physical demands〔 on a person's life are so great as to prevent him or her from performing activities of daily living or, less strictly, only when those demands prevent him/her from performing his/her familial or occupational duties.〔Hallowell, Edward M & John Ratey. 2005. ''Delivered from Distraction: Getting the Most out of Life with Attention Deficit Disorder''. Ballantine Books. ISBN 0-345-44231-8〕
Nervous breakdowns are often caused by serious ongoing mental health disorders.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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