1．光感类皮肤病。这是人体对阳光发生强烈反应所致，多见于皮肤白晰的人。阳光长时间照射皮肤暴露处，会引起手背、面部发红、肿胀、重者可发生水泡，通称光感性皮炎。预防方法主要是避免日光直照和光敏物质。治疗可服氯喹，维生素B、C和烟酰胺，抗组织胺药物息斯敏等。2．汗? 1. Light-sensitive skin disease. This is the body caused by a strong reaction to sunlight, more common in the skin white and clear people. Exposure to sunlight for a long time the skin exposed, will cause the back of the hand, facial redness, swelling, severe blisters may occur, known as light-sensitive dermatitis. Prevention is mainly to avoid direct sunlight and photosensitive substances. Treatment can be taken chloroquine, vitamin B, C and nicotinamide, antihistamine astemizole and so on. 2. sweat?