Podiatrists' concerns include corns, bunions, FEET, and toebones. Corns are small, circular areas of thickened skin that form on the toes or other parts of the foot due to pressure or friction. Bunions are bony bumps that form at the base of the big toe, often caused by wearing tight or ill-fitting shoes. FEET are the lower extremities of the body, consisting of the ankle, heel, arch, and toes. Toebones are the long bones in the toes that connect to the metatarsals. Podiatrists specialize in diagnosing and treating conditions related to the FEET, ankles, and lower legs.