Preventive measures for photoallergy: Vegetables causing solar dermatitis: ashwagandha, amaranth, radish leaves, pig’s hair, mustard, spinach, rape, horsetail, celery, eggplant, potatoes, cauliflower, fresh wood ear, etc. Drugs: diuretics, tachyphylaxis, chlorpromazine, Librium, non-steroidal anti-inflammatory drugs (aspirin), tetracycline, sulfonamides, acetaminophen, quinine and quinidine, ashwagandha; anti-allergic drugs: cycloheximide; doxepin, diphenhydramine, iproniazid; methotrexate; antihypertensive drugs, Jenju antihypertensive tablets, compound antihypertensive tablets. Chemical items: fragrance, soap, face wash, body wash, etc. contain complex fragrances, bathing can not be washed too long, the water temperature can not be too hot, moderate rinse off, to avoid fragrance ingredients in the bath penetrate into the skin. Allergies avoid mouth: 1, tobacco, alcohol, chili, hot pot, barbecue, skewers, spicy hot; pickled brine food; delineated not to eat, not delineated less; 2, McDonald’s, KFC, Dex, chicken fingers, French fries, fritters, fries, instant noodles, other fried fried food; 3, peanuts, hazelnuts, beans, almonds, pistachios, puffed food; 4, konjac, bamboo shoots, cilantro, leeks, celery, (wild vegetables, mushrooms); zha Ear root (pig butt), onion, ginger, garlic, garlic moss; 5, seafood, silver carp and other fishy heavy freshwater fish, eels, loach, cattle, sheep and dog meat; 6, pets, flowers, feathers, hair dye, perfume.