This does not slough-off like normal skin cells. These are common warts, but are located around the fingernails and may grow under the fingernail. Periungual warts are difficult to treat. By scratching, this individual has spread the virus in a line, causing a line of warts to develop. This linear type spread of warts or other conditions is called the Koebner phenomenon.
Warts are a very common skin condition.
They frequently appear as single lesions or in small groups. This is a photograph of an unusually severe and extensive case of warts. Liposarcoma on the right forearm. This is a highly malignant tumor composed of fat and muscle cells. A lipoma is a benign fatty tumor found in the subcutaneous layer just below the skin.