What skin condition results from the overexposure clumping of elastin fibers?

Leathery skin is a skin condition that arises from overexposure, particularly to ultraviolet (UV) radiation, which leads to damage and alteration in the skin's structural proteins, including collagen and elastin. In this condition, the elastin fibers can clump together, producing a hardened and thickened surface that resembles leather. This change in texture is a direct result of prolonged UV exposure, which accelerates the aging process of the skin, leading to decreased elasticity and increased wrinkling.

In contrast, other skin conditions mentioned in the options do not relate to the clumping of elastin fibers. Hematomas are localized collections of blood outside of blood vessels, typically resulting from trauma. Erythema refers to redness of the skin caused by increased blood flow, often due to inflammation or infection. Cyanosis is characterized by a bluish discoloration of the skin due to insufficient oxygenation of the blood. Thus, leathery skin specifically connects to the structural changes from UV damage, marking it as the correct answer.