Foot Callus Underlying Cause
Calluses and corns are caused by persistent pressure, or friction, that is applied the surface of the skin.
Causes of persistent pressure or friction include:
- Shoes that fit poorly
- Wearing shoes without socks
- Thin socks
- High heels
- Repetitive activities that involve the feet:
Continue to Foot Callus Anatomy
- Coughlin MJ: Common causes of pain in the forefoot in adults. J Bone Joint Surg Br 2000 Aug; 82(6): 781-90. 
- Singh D, Bentley G, Trevino SG: Callosities, corns, and calluses. BMJ 1996 Jun 1; 312(7043): 1403-6.