Abscesses. An abscess can form on the skin or on tissues within the body and cause pain, swelling, and tenderness.
Deposits of bone in soft tissues (heterotopic bone formation). These occur especially around the hip joint and can cause pain and problems with walking or moving the legs.
Squamous cell skin cancer, especially if the wound lasts for several months or more or if the wound becomes a stage 4 pressure sore. Symptoms of squamous cell cancer include growths or patches of skin that feel scaly, bleed, or develop a crust, and sores that do not heal.