Drug-induced Photosensitivity.

Ultraviolet radiation is considered the main environmental physical hazard to the skin. It is responsible for photoaging, sunburns, carcinogenesis, and photodermatoses, including drug-induced photosensitivity. Drug-induced photosensitivity is an abnormal skin reaction either to sunlight or to artificial light. Drugs may be a cause of photoallergic, phototoxic, and photoaggravated dermatitis. There are numerous medications that can be implicated in these types of reactions. Recently, non-steroidal anti-inflammatory drugs have been shown to be a common cause of photosensitivity. As both systemic and topical medications may promote photosensitive reactions, it is important to take into consideration the potential risk of occurrence such reactions, especially in people chronically exposed to ultraviolet radiation.