Eruptive keratoacanthomas on the legs after fractional photothermolysis: report of two cases.

Photoaging refers to the effects of long-term ultraviolet (UV) exposure and sun damage superimposed on intrinsically aged skin. The clinical signs associated with photoaging include dyspigmentation, laxity, a yellow hue, wrinkles, telangiectasia, a leathery appearance, and cutaneous malignancy. These changes often occur gradually as a person ages but can develop earlier if extensive UV exposure and photodamage have taken place. When patients present early with photodamage, their concerns are often cosmetic, inquiring about treatments for rhytides, skin roughness, laxity, and mottled appearance.