Calluses are areas of thick, hardened, dead skin. They form to
protect the skin and structures under the skin from pressure, friction, and
injury. They may look grayish or yellowish, be less sensitive to the touch than
surrounding skin, and feel rough.
Calluses on the foot generally form on the ball of the foot, the
heel, and the underside of the big toe. They often form where the foot and the
beginning of a toe meet.
ByHealthwise Staff Primary Medical ReviewerWilliam H. Blahd, Jr., MD, FACEP - Emergency Medicine Adam Husney, MD - Family Medicine Specialist Medical ReviewerBarry L. Scurran, DPM - Podiatry and Podiatric Surgery