From infantile eczema to acne, from the common ringworm to the rarely seen sun rash, almost everyone encounters a skin disease in their lifetime. Recently, in the 13th China Foot and Skin Care Week expert health consultation, the reporter found that although most of the skin diseases are neither critical nor serious, but it brings quite a lot of trouble to the patients. In this regard, the Chinese Medical Association, dermatology branch of the director-designate, Peking University People’s Hospital, Department of Dermatology, Prof. Zhang Jianzhong that the people in some common misconceptions is the cause of people tangled up, the important reason for the confusion. Misconception 1, skin disease is a minor disease, the doctor prescribed ointment with their own purchase are the same. And for those stubborn skin diseases, the doctor is not much to do, so there is no need to go to the hospital to see. Misunderstanding index: ★★★★★ Zhang Jianzhong: Chinese Medical Association last year in more than 20,000 patients in the questionnaire survey showed that self-treatment of skin diseases can achieve satisfaction of only 10% or so, while the proportion of patients to the hospital to achieve satisfaction of the proportion of 80% to 90%. The reason for this gap is that on the one hand, there are many types of skin diseases (more than 2,000 kinds), and it is difficult for patients to accurately determine which kind of skin disease they belong to, and they are often misjudged and mistreated. On the other hand, only specialists will choose the appropriate method for comprehensive treatment among the many treatments such as topical medication, oral medication, physiotherapy, cryotherapy, laser, etc. according to the patient’s condition, while patients are often limited to common topical ointments. In addition, patients often judge their condition according to the symptoms, and stop treatment when the symptoms improve a little, making the skin disease treated and then committed, committed and then treated again, over and over again. Specialists will often develop a scientific treatment program based on the patient’s condition. Therefore, skin disease is best to go to the hospital, especially continued for two weeks did not improve, self-medication is ineffective and serious symptoms of patients, must go to the hospital to see a doctor. Myth 2, suffering from skin diseases need to avoid eating, all kinds of fish and shrimp and eggs, beef and mutton should be eaten less or not eat. Misunderstanding index: ★★★★ ☆ Zhang Jianzhong: In the dermatology clinic, patients often ask the doctor whether they need to avoid food. In fact, in general, in addition to eczema, urticaria need to eat less or do not eat alcohol, seafood, beef and mutton, other skin diseases often do not need to avoid food. Such as ringworm, psoriasis, acne, vitiligo, etc. basically do not need to avoid food. Even children’s allergic skin disease should not avoid food. Children in the developmental period, the need for a variety of nutrients, the solution is: parents can do a food notes, observe the reaction within two days after eating a certain food, if there is no reaction, you can eat; if there is an allergic reaction, avoid for a period of time. Myth 3: Ringworm of the feet has no symptoms and does not need to be treated. Misunderstanding index: ★★★★ ☆ Zhang Jianzhong: Tinea pedis can be divided into several types according to the performance, some blisters, peeling, rotting toe seam, some of the entire foot keratinization hypertrophy, the patient feels is the skin under the sole of the foot becomes thick and hard. Some tinea pedis neither hurts nor itches, so many patients just let it happen and rarely treat it. Some patients due to tinea pedis infection caused by tinea pedis, but also often only treatment of hands not feet. In fact, no symptoms of chronic tinea pedis is still a persistent source of fungal infection. If not actively treated, it can be transmitted to other people and their own hands and other parts of the body at any time. In addition, skin cracks and eruptions caused by tinea pedis are an important cause of foot infections, which can induce diseases such as salpingitis. Therefore, patients with tinea pedis, especially those with systemic diseases such as diabetes and immune dysfunction, must actively treat tinea pedis, even if it has no symptoms. Myth 4, the Japanese nuclear power plant nuclear leakage will lead to dermatitis, and its emitted radioactive iodine-131 if it comes into contact with the skin, dermatitis will occur. Misconception index: ★★★★★☆☆ Zhang Jianzhong: It takes a large dose of radioactive material to cause dermatitis. Usually radiation-induced dermatitis can be divided into two categories, one is the short-term large amount of exposure to radiation occurs dermatitis, acute radiation dermatitis, common in patients receiving radiation therapy. They are treated with doses of radiation that are tens to hundreds of thousands of times higher than the doses they receive in their normal living environment. The other category is chronic radiation dermatitis caused by small doses of radiation exposure over a long period of time, commonly seen in poorly protected radiologists and doctors engaged in interventional therapy. The concentration of radioactive material released from this Japanese nuclear power plant explosion that drifted into our air was very low, far below the concentration that can cause radioactive damage. In addition, the half-life of iodine-131 is about 8 days, and even a small amount of exposure will basically not cause dermatitis. In addition, any radioactive dust can be removed by simple bathing, so washing and bathing often is a good protection method.