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Claustrophobia is the fear of having no escape and being in closed or small space or room〔(【引用サイトリンク】 title=Claustrophobia )〕 It is typically classified as an anxiety disorder and often results in panic attack, and can be the result of many situations or stimuli, including elevators crowded to capacity, windowless rooms, and even tight-necked clothing.〔 The onset of claustrophobia has been attributed to many factors, including a reduction in the size of the amygdala, classical conditioning, or a genetic predisposition to fear small spaces. One study indicates that anywhere from 5–7% of the world population is affected by severe claustrophobia, but only a small percentage of these people receive some kind of treatment for the disorder.〔''Phobias: A Handbook of Theory, Research, and Treatment''. Chichester ;New York: Wiley, 1997.〕 The term ''claustrophobia'' comes from Latin ''claustrum'' "a shut in place" and Greek ', ''phóbos'', "fear". ==Symptoms== Claustrophobia is typically thought to have two key symptoms: fear of restriction and fear of suffocation. A typical claustrophobic will fear restriction in at least one, if not several, of the following areas: small rooms, locked rooms, cars, airplanes, trains, tunnels, cellars, elevators and caves. Additionally, the fear of restriction can cause some claustrophobia to fear trivial matters such as sitting in a haircutter's chair or waiting in line at a grocery store simply out of a fear of confinement to a single space. Another possible site for claustrophobic attacks is a dentist's chair, particularly during dental surgery; in that scenario, the fear is not of pain, but of being confined. Often, when confined to an area, claustrophobics begin to fear suffocation, believing that there may be a lack of air in the area to which they are confined. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Claustrophobia」の詳細全文を読む スポンサード リンク
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