Fibrous dysplasia - Symptoms and causes - Mayo Clinic
Jul 14, 2020· Fibrous dysplasia may cause few or no signs and symptoms, particularly if the condition is mild. More severe fibrous dysplasia may cause: Bone pain, usually a mild to moderate dull ache. Swelling. Bone deformity. Bone fractures, particularly in the arms or legs. Curvature of leg bones.