这些成分可引起指甲下出血，变色，甚至使原本质地光滑的指甲变得粗糙。

These ingredients can cause bleeding under the nails, discolouration and can roughen the smooth texture of the nails.

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结果：皮肤镜对于咖啡斑及甲下出血等临床常见色素性疾病的良恶性判断率特异度和灵敏度达到100%；对于恶性黑素瘤、色素痣、脂溢性角化的特异度和灵敏度也较高。

Results:The specificity and sensitivity of dermoscopy were 100% in the judgment of benign or malignant pigmented diseases such as café-au-lait spots and nail bed hemorrhages.

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