Verruca vulgaris is the most common disease in clinic, which is caused by human papillomavirus infection. It is a local skin malignant disease, which usually occurs around the fingers, and some soles are more common, with rough and hard soybean grains or large nodules. Over time, this place may expand to form small patches.

Will grow in pieces, the surface is rough, there are slight cracks, the surface is easy to bleed, forming a small black spot scab, which is some manifestations of common warts.