Common photosensitive foods: Vegetables: celery, ashwagandha, purple clover, snow lettuce, fennel, amaranth, capers, radish leaves, spinach, raised wheat, parsley, red flowering herbs, rape, mustard, etc.; Fruits: figs, citrus, lemon, mango, pineapple, etc.; seafood such as snails, shrimp, crabs, mussels, etc. Common photosensitive drugs: antibiotics such as chlortetracycline, doxycycline, dimethylaminetetracycline, norfloxacin, flurofloxacin, ofloxacin, enrofloxacin, ciprofloxacin, lomefloxacin, sparfloxacin, sulfonamides, chloramphenicol, gentamicin, etc.; antifungal drugs such as ashwagandha, itraconazole, ketoconazole; oral hypoglycemic drugs D-860; sedative drugs such as promethazine, chlorpromazine; diuretics such as double Hydroxycoumarin, Zhenju antihypertensive tablets, compound antihypertensive tablets, regular antihypertensive tablets, Kefut (compound captopril), compound piperazine tablets, compound Robitussin tablets; antihistamines such as Benadryl, paracetamol, etc.; other drugs such as aspirin, naproxen, amiodarone, retinoids, thiazides and benzocaine can often cause photomorphic reactions. Chinese medicine: Xianhecao, Angelica, Lianxiao, Qianhu, Sanjiu Gastrodia, Boneset, Amaranthus, Ziyunying, etc. Three elements of photosensitivity reactions occur: 1. specific sensitivity of the body; 2. sufficient dose of sunlight exposure; 3. sufficient dose of photosensitive substances ingested into the body.