Sebaceous cysts usually do not go away on their own. Sebaceous cysts are mainly due to hair follicles and sebaceous gland ducts are blocked, sebaceous glands and other contents can not be discharged in a timely and smooth manner, it will be stagnant and thus form a cystic structure, sebaceous cysts will not disappear on their own. Sebaceous cysts usually have no conscious symptoms, only the appearance of the prominent surface of the bulge, if the pressure of the surrounding tissue may have pain, if there is infection will cause redness, swelling, pus and other damage. Sebaceous cysts should be treated in a timely manner, and the main treatment is surgical excision. When accompanied by infection, it is necessary to control the inflammation first, and then elective surgical excision.