Skin bumps come in many forms. For the most part, they are all benign, but should always be monitored if they change color or shape, or begin to bleed. There are numerous forms of skin bumps, including: milia, sebaceous hyperplasia, moles (nevi), Barnacles, red bumps (hemangiomas), warts, cysts, keloids, skin tags, and keratosis pilaris.
A few of the most common kinds of skin bumps are cysts, skin tags, and keratosis pilaris. Cysts are noncancerous, closed pockets of tissue that can be filled with fluid, pus, or other material. Skin tags are tiny, outpouching areas of skin that develop for many reasons, such as hormonal changes, age, or genetics. They are completely harmless and do not require treatment, although many people elect to have them removed for cosmetic reasons. Keratosis pilaris (commonly called KP) looks like chicken skin bumps on the upper arms and thighs. They can also appear on the cheeks, back, and buttocks. Keratosis pilaris is harmless, but the appearance can be bothersome. The condition is helped by finding a balance between exfoliation and moisture. Glycolic acid is also an effective product to use to treat this condition.