Sunlight, sunburn, and sunscreens. Preventing and remedying problems from 'too much fun in the sun'

Exposure to ultraviolet (UV) radiation is a dose-related risk factor for the development of several cutaneous cancers. This risk is reduced by avoiding exposure to the sun and by the use of sunscreens. The latter products are rated according to their ability to protect skin from developing erythema. Treatment of overexposure is geared to relief of symptoms. Preventive measures, however, should always be encouraged.