Your doctor can often recognize psoriasis by the appearance and location of the patches on your skin, scalp, or nails.你的医生往往可以承认牛皮癣的外观和位置的补丁你的皮肤，头皮，或指甲。 Psoriasis usually involves bright red areas of raised patches that are often covered with loose, silvery, scaling skin and are commonly located on the knees, elbows, scalp, hands, feet, or lower back.银屑病通常涉及鲜红的领域提出了补丁，往往覆盖着松散，银，缩放皮肤和通常位于膝，肘，头皮，手，脚，或下背部。 Special tests are usually not needed.特别测试通常是不需要的。 If it is hard to diagnose the condition by looking at your skin, your doctor may remove a small skin sample (biopsy) and send it to a lab for analysis.如果是难以诊断的情况看你的皮肤，你的医生可能会移除一个小的皮肤样本（活检）并将其发送到实验室进行分析。 If you have joint pain, X-rays may be taken to diagnose psoriatic arthritis.如果您有关节疼痛， X -射线可以采取诊断银屑病性关节炎。 Blood work may help rule out other forms of arthritis.血的工作可能有助于排除其他形式的关节炎。 Guttate psoriasis is a less common type of psoriasis.点滴状银屑病是一种不太常见的类型的牛皮癣。 The small (less than 1 cm in diameter), scaly, circular elevations (papules) that occur with guttate psoriasis appear more on the trunk of the body than on the arms or legs.小（小于1厘米直径） ，鳞片，圆形高地（丘疹）与所发生的点滴状银屑病患者出现更多的躯干的身体，而不是武器或腿。 If you have these papules, your doctor may perform a throat culture to determine whether streptococcus bacteria are present. 5如果您有这些丘疹，您的医生可能执行的喉咙文化，以确定是否链球菌的细菌存在。 五日 Sometimes a skin KOH test is done to rule out a fungal infection.有时，氢氧化钾的皮肤测试做是为了排除真菌感染。
VitaDocs Medical Reference from Healthwise VitaDocs医疗参考康慧  Last Updated: January 06, 2006最后更新： 06年一月六日 This information is not intended to replace the advice of a doctor.此信息是无意取代咨询医生。 Healthwise disclaims any liability for the decisions you make based on this information.康慧不承担任何责任，决定你在此基础上的信息。 @ 1995-2007, Healthwise, Incorporated. @ 1995-2007年，康慧公司。 Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.康慧，康慧为每个健康的决定，康慧标识的商标康慧公司。
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