The common ones are dermatoglyphic cysts, sebaceous cysts, pigmented nevi, nevus nigricans, verrucous nevi, sarcoidosis, hemangiomas, and more serious giant nevi and neurofibromas. Dermatoglandular cysts: usually found near the brow bone, are small, tough, round or oval-shaped masses with a growth pattern. Sebaceous cysts: These are small, round masses on the surface of the body, usually on the head and face, and can grow slowly from the size of a green bean to the size of a soybean or larger. Pigmented nevus: A brown or dark brown nevus in the shape of a dot, growing slowly. Black hair nevus: The area is larger than pigmented nevus, and it can also be in the form of flakes, which will slowly thicken as it grows, and the hair on it will gradually become denser. Verrucous nevus: It can be flaky, linear, or punctate, formed by the accumulation of small granular warts, with a growth pattern, and is easily found on the head, face, axillae, and groin area. Granuloma: It is a chronic bacterial infection in children after being scratched by mosquito bites or small folliculitis, always repeatedly breaking down and bleeding, forming a small flesh-red swelling that is difficult to heal by itself. Treatment: Small pigmented nevus and nevus nigricans can be temporarily left untreated if they do not grow fast. However, larger pigmented nevi and nevus nigricans that are still growing slowly should preferably be removed early. Dermatoglyphic cysts and sebaceous cysts will only grow gradually and will not subside, and cannot be eliminated by drugs, so they can only be removed surgically, and it is better to do it late than early! Granulomas repeatedly break and bleed, and have chronic bacterial infections. Once formed, they cannot heal on their own and need to be surgically removed in time. Warty nevi can be temporarily preserved in small areas, but those with larger areas tend to grow and often bleed and become infected easily after scratching, so they should also be removed as soon as possible.