After eating a large plate of Chinese toon scrambled eggs during her outing, Ms. Wang had redness and swelling on her face and back of her hands. It turned out that she was suffering from plant solar dermatitis. "Go to the suburbs and take a walk. It's like this." On April 2, Ms. Wang hurried to the consulting room of Jiang Shan, associate professor of Dermatology of Wuhan University People's Hospital (Hubei Provincial People's Hospital), pointed to her red and swollen face and the back of her hands and complained to the doctor. Jiang Shan carefully checked the distribution of Ms. Wang's rash and asked if she had eaten wild vegetables. After learning that Ms. Wang ate a lot of Chinese toon scrambled eggs, he determined that Ms. Wang was suffering from plant solar dermatitis. Jiang Shan introduced that plant solar dermatitis refers to the skin lesions mainly manifested by phototoxic reactions caused by excessive use or direct contact with photosensitive plants and after prolonged exposure to the sun. The main manifestations are skin redness, swelling, papules, blisters, blood blisters or necrosis in exposed parts such as face and back of hand. The disease is often related to the simultaneous action of physique, eating photosensitive plants and long-term sunlight. Patients suffering from liver and kidney diseases, endocrine disorders, metabolic abnormalities, anemia or malnutrition are also vulnerable to strong sunlight exposure after eating too much or contacting certain plants. In addition, when eating wild vegetables, the cooking methods of plants, condiments and rot parasitic fungi may also be involved in the pathogenesis. In addition to Toona sinensis, common photosensitive plants also include coriander, celery, fennel, citrus, lemon, lime, fig, wild rape, mustard, lime, amaranth, agaric, Lentinus edodes, etc. furan coumarin contained in these plants is the most common and important photosensitizer. Under the irradiation of sunlight and ultraviolet rays, photosensitizers absorb light energy and stimulate the body to produce photosensitive reaction or phototoxic reaction, resulting in serious damage to skin cells. Under special circumstances, local skin contact with the above plants may also induce dermatitis. "Eat some delicious wild vegetables, but be sure to eat them well after sunscreen." Jiang Shan reminded that although plant solar dermatitis is rare, it is easy to be misdiagnosed and cause serious consequences. If the treatment is not timely, it is easy to leave scars, and even cause skin necrosis and infection. (outlook new era)