What is thickened skin caused by continued pressure on any part of the body called?

Thickened skin that develops due to continued pressure on any part of the body is referred to as a callus. A callus forms as a protective response to friction or pressure, resulting in the thickening of the outer skin layer. This process is the body’s natural mechanism to safeguard underlying tissues from damage. Calluses commonly appear on the hands and feet, often seen in individuals who engage in repetitive activities or those who wear ill-fitting shoes.

In contrast, a scar is a mark left on the skin after a wound or injury has healed, which involves the formation of fibrous tissue and is not simply a thickening of skin due to pressure. A wart is a growth on the skin caused by a viral infection, specifically human papillomavirus (HPV), and is different from a callus in its cause and appearance. A blister is a fluid-filled elevation on the skin that occurs due to friction, burns, or irritants, representing an acute response rather than a chronic thickening of skin.

Understanding the formation and characteristics of calluses is essential for anyone studying skin care and aesthetics, as proper treatment and prevention are key components of maintaining healthy skin.