大腿处皮肤无缘无故黑了一块，不痛不痒

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快速问医生

病情分析：大腿处无缘无故黑了一块，主要考虑和皮下出血有关，比如走路的时候不小心撞到腿部，导致皮下的毛细血管出血，有可能导致局部的颜色发黑发青。建议做好局部的护理，随着时间的推移可以逐渐消退。

刘青云

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提示：本内容仅作参考，不能代替面诊，如有不适请尽快线下就医