In the past two years, in the outpatient clinic with photosensitive skin disease patients than in previous years, there is an increasing trend, and women account for the majority of the reasons? In the past, photosensitive skin disease is mostly related to the following factors: 1, cosmetics: containing dyes, preservatives, anti-light agents, fragrances, essential oils, etc.; 2, drugs: sulfonamide, tetracycline, minocycline, doxycycline, aspirin, birth control pills, thiazide diuretics, sulfonylurea hypoglycemic drugs, estrogen, etc., Chinese medicine, dahurica, etc.; 3, food: such as amaranth, horsetail, purple clouds, figs, mud snail, etc. From the recent research, our daily consumption of cabbage, spinach, celery, parsley, rape, carrots, citrus, pineapple, mangoes, etc. contain photosensitive substances (psoralen), but almost everyone is eating one or more of them every day, but rarely because of eating the above “photosensitive” food and disease (perhaps it is Therefore, it seems that there is not enough evidence to determine the susceptibility to photosensitive skin diseases by the presence of photosensitizing substances. It has been suggested that photosensitive skin disease is associated with the presence of high IgE in the body, and that hyper-IgEemia is most often seen in allergic diseases such as eczema, urticaria, and bronchial asthma, whereas in fact people with photosensitive skin disease do not necessarily suffer from these diseases. It seems that further research is needed to clarify which groups of people are susceptible to photosensitive skin diseases. During the consultation, it was found that most women like to eat fruits for beauty, body beauty and nutrition, and there is a wide variety of fruits, and they are not limited to those containing photosensitive substances as mentioned above. So are fruits the culprit of photosensitivity? In my personal experience, it seems that most of the evidence of photoallergic diseases in Chinese medicine belongs to the category of “dampness”, which means that the dampness in the body is heavy. The treatment of photosensitive skin diseases according to the method of eliminating dampness is also more effective, which proves the relationship between photosensitivity and “dampness”. The reason why dampness stays in the body has a lot to do with the current eating habits (which is what many patients wonder why they are not allergic to light, but now they have problems when they are exposed to the sun). The current propaganda is calling for people to eat more fruits for vitamins, crude fiber, weight loss, moisturizing, beauty, etc. Many people therefore take fruit as a staple food to eat. I do not know, eat more sweet hurt the spleen, eat more sweet produce damp. Fruits are mostly cold foods, cold and damp stay, the spleen and stomach’s ability to transport water and dampness decreases, and dampness is generated internally, which not only makes it easy to develop light allergies, but also eczema, obesity, dull complexion, heavy body and other discomforts, and children are more prone to indigestion, wasting, delayed development, colds and coughs. Therefore, when I treat photoallergic dermatoses clinically, I make sure to advise patients to eat less fruits, eat less cold drinks, drink less beverages and drink less water. Patients who cooperate tend to get well quickly and are not prone to recurrence; those who do not think so tend to have recurring conditions and spend time, energy and money running to the hospital. Gay men suffer from photosensitive skin disease, mostly seen in people who like to drink beer, like to eat meat, but also related to moisture. The ancients said: all diseases are born in the gas, in today’s extremely rich material life, should add a: all diseases are born in food. In fact, diabetes, coronary heart disease, hypertension, obesity, gout, gallstone disease, stroke, including the rise in the incidence of tumors, all related to food.