Cysts are noncancerous, closed pockets of tissue that can be filled with fluid, pus or other material. Cysts are common on the skin and can appear anywhere. They often feel like large peas under the surface of the skin. Cysts can develop as a result of infection, clogging of sebaceous glands (oil glands), or around foreign bodies. There are many different types of cysts which include epidermal, sebaceous, acne and pilar cysts. Acne cysts tend to be the largest in size and located deeper within the skin. Cystic acne often look like boils on the skin, can be large puss-filled, large white bump, redness, tender or painful to touch.
Treatment of cysts is not medically needed however, individuals consider elective removal for cosmetic reasons or due to general discomfort caused by the cyst. Depending on the size and type of cyst options include punch excision and kenalog injection.