Calluses and corns, hardened areas of skin, develop from increased pressure and friction. This repetitive stress triggers an accelerated production of keratinocytes, the cells that make up the epidermis, the outermost layer of skin. This rapid cell division thickens the skin in the affected area, forming a protective barrier against further damage.
This adaptive response is crucial for safeguarding underlying tissues from injury. Historically, understanding this process has enabled the development of preventive measures, such as proper footwear and protective padding, and treatments for managing excessive callus and corn formation. These interventions improve comfort and mobility, particularly for individuals engaged in activities involving repeated friction or pressure on specific areas of the skin.
