I don't know what it is, but I always thought it was a wart at first, so I didn't care too much!

Look at the picture and consider common warts, commonly known as tingling and boils, which are mostly caused by HPV2 infection. Mostly between the ages of 5 and 20. Due to self-inoculation, verruca vulgaris can occur in all parts of the body, but mostly in the hands. Soaking hands in water for a long time will induce. Typical lesions are taupe, brown or soybean-sized or larger skin papules with rough surface and hard texture, which can become papilloma-like hyperplasia. It can become periungual wart when it occurs around nails, and it is subungual wart when it occurs in nail bed. The wart body is slender and the top is keratinized, which is called filamentous wart. The uneven surface of the wart body is called a wart. Treatment includes local retinoic acid and antiviral drugs injected into the root of warts. Cryopreservation, electrocautery, curettage and laser therapy can also be used.