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Overscreening, also called unnecessary screening, is the performance of medical screening without a medical indication to do so. Screening is a medical test in a healthy person who is showing no symptoms of a disease and is intended to detect a disease so that a person may prepare to respond to it. Screening is indicated in people who have some threshold risk for getting a disease, but is not indicated in people who are unlikely to develop a disease. Overscreening is a type of unnecessary health care. Overscreening is problematic because it can lead to risky or harmful additional treatment when a healthy person gets a false positive result for screening which they should not have had. It also causes unnecessary stress for the person receiving the test, and it brings unnecessary financial costs which someone pays. The general rule is that people should only be screened for a medical condition when there is a reason to believe that they ought to be screened, such a medical guideline recommendation for screening based on evidence from a person's medical history or physical examination. Controversy and debate arises when new medical guidelines change screening recommendations. ==Definition== Screening is a type of medical test which is done on health people who do not show symptoms of a medical condition.〔 * *〕 Screenings are correctly performed when done on a person who has significant risk of developing a medical condition, and incorrectly performed when done on a person whose risk is not significant.〔 There can be debate about when risk becomes great enough to become significant and merit a recommendation for screening, but in discussions about overscreening, this is not the cause of the problem. Overscreening almost always happens when a person is screened routinely and without any consideration of their risk for a medical condition. One early use of the term "overscreening" as "unnecessary screening" was in 1992 in the context of cervical cancer screening.〔Please share any example of an earlier use of this term or any claim to coining this term on this article's talk page. *〕 A 1979 paper used the term "overscreening" to mean "false positive result in a screening". 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「Overscreening」の詳細全文を読む スポンサード リンク
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