Cysts are fluid or semi-fluid filled sacs that may be bothersome or cosmetically undesired. Cysts are common on the skin and can appear anywhere on people of all ages. Cysts can vary in size, and can develop as a result of infection, clogging of sebaceous glands (oil glands), genetic or inherited conditions, or around foreign bodies, such as earrings.
Symptoms of cysts include finding an abnormal lump on the surface or just below the skin. They are closed pockets of tissue that can be filled with fluid, pus or other material. Skin cysts are usually slow-growing, painless and smooth to the touch when they are rolled under the skin. Cysts can appear anywhere, but generally appear on your face, neck, trunk and genital area.
Anyone can get cysts but there are factors that make a person more susceptible than others. These include being past puberty, being male, having a history of acne, having significant sun exposure and experiencing skin injuries.