Moles can be caused by viral infections such as skin warts, pigmented nevi or skin molluscum contagiosum.
1. Skin warts: These are skin growths caused by HPV virus infection, including common warts, flat warts and filiform warts. The skin color or brown pimples, hemispherical, rough surface; flat warts surface flat and smooth; filiform warts for the slender filiform protuberance.
2. Nevus pigmentosus: a benign growth of the skin formed by the abnormal aggregation of melanocytes. It can appear as a black or brown papule, partly flush with the skin.
3. Soft skin fibroma: also known as dermatofibroma, manifested as skin-colored banded or filamentous redundant organisms with soft texture.
Meat nevus can go to the hospital dermatology department, clear diagnosis, and then do the corresponding treatment.