Actinic injury.
Sun exposure has multiple well-documented acute and chronic effects of substantial medical importance. The most extensively studied of these are the effects on the skin. Acute effects include sunburn, phototoxic and photoallergic reactions, altered immunoreactivity, and a variety of photosensitivity disorders. Chronic effects include photoaging and photocarcinogenesis. Photoprotection is central to both prevention and treatment.
Gilchrest
B A
BA
USDA Human Nutrition Research Center on Aging, Tufts University, Boston, Massachusetts.
D000818:Animals; D006801:Humans; D010787:Photosensitivity Disorders / Q000209:etiology; D015595:Skin Aging / Q000502:physiology; D012871:Skin Diseases / Q000209:etiology* / Q000517:prevention & control; D013472:Sunlight / Q000009:adverse effects*; D014466:Ultraviolet Rays / Q000009:adverse effects