痣是局限性皮肤色素异常,可以出生就有亦可后天发生。健康人皮肤上通常可找到15～20颗痣,这些痣绝大多数是良性的,毋需治疗。黑毛痣是色痣的一种类型,由于其局部发黑、皮肤粗糙而隆起,并且长有硬质短毛,常特别引人关注。一颗小的黑毛痣如无碍美观,一般不需除去。但是,对发生在身体易受摩擦或损伤部位的痣则要重视,如痣体迅速生长变大、颜色变淡或加深发亮,痣上的短毛脱落、痣周围发红隐约可见到血丝,表面有破溃结痂甚至形成经久不愈的溃疡。附近的淋巴结肿大,或者在大痣的周围出现一些卫星样小痣等,都表 Mole is a localized skin pigmentation abnormalities, you can have birth can also occur the day after tomorrow. Normal skin can be found on the 15 to 20 nevi, the vast majority of these nevi are benign, without treatment. Black mole is a type of mole, which is of particular concern due to its local blushing, rough skin and bulging, and long hard short hairs. A small black moles, such as unimpeded appearance, generally do not need to remove. However, the occurrence of the body vulnerable to friction or injury sites should pay attention to the mole, such as rapid growth of the mole growth, color fades or deepened bright, short hair on the mole off, red around the mole can see the bloodshot, Surface ulceration scab or even form a lasting ulcer. Near the lymph nodes, or in the vicinity of the big mole some satellite-like nevus, etc., are