寻常疣也叫瘊子、千日疮、刺瘊等，此症在儿童中很常见。寻常疣开始时为针尖至针头大小的丘疹，逐渐增大，可达黄豆大小或更大；形状为圆形，有时呈不规则形状，表面粗糙、角化明显、高低不平、坚硬；颜色呈皮肤色、黄灰色或褐色，边界清楚，无明显炎症反应，如受到摩擦，可引 Common warts, also known as prickly heat, thousands of sores, stingray, etc., the disease is very common in children. Common verrucae at the beginning of the pinpoint to needle-sized papules, gradually increased, up to the size of soybeans or more; shape is round, and sometimes irregular shape, rough surface, keratosis obvious, rugged, hard skin color; Color, yellow-gray or brown, clear boundary, no obvious inflammatory reaction, such as friction, can lead