Phytophotodermatitis (plant light dermatitis) is an inflammation of the skin caused by contact with certain plants during recreational or occupational exposure to sunlight. The inflammatory response is a phototoxic reaction to photosensitizing chemicals in several plant families; a common type of PPD is due to exposure to limes. The patient had the oil from the rind of a lime on her fingers, which she then touched to her face while sunbathing (“lime” disease). Not to be confused with "Lyme" disease.