A large percentage of patients with many clinical allergic skin diseases (e.g., hives, etc.) are due to food allergies, so dermatologists often have patients tested for food intolerances. BIOMERICA is one of the first companies in the world to provide ELISA products for food intolerance testing, and can provide more than 90 types of food intolerance tests. Wu Jian Ke, Department of Venereal Diseases, Guangdong Provincial Dermatology Hospital Since food intolerance can occur at all ages, it manifests as long-term chronic symptoms caused by food intolerance, and its effects can spread throughout the system, but it is often delayed due to the lack of effective diagnostic tools and clinical neglect. Through the implementation of food intolerance testing, we can determine the types of foods that produce intolerance, so that we can develop a food restriction plan and guide patients to avoid intolerant foods, thereby achieving prevention and treatment. For patients with positive test results, it is necessary to: 1. In principle, all foods with positive test results should be avoided; 2. If a certain food is avoided, then all foods containing this food component should be avoided. For example, if you are intolerant to milk, you should avoid ice cream, cream, yogurt, cakes, etc. containing milk. 3. 5. Since the food-specific IgG antibodies produced in the body have a half-life of 23 days, this antibody will normally return to normal levels after 3-6 months of not being exposed to the food causing the allergy. At this time, if the food intolerance test is done again and if the positivity turns negative, you can slowly try to start eating these foods again. After the test results turn negative, the method of starting to eat foods that you were allergic to before: 1. Choose foods that you were only 1+ allergic to first and try them slowly, and then choose 2+ and finally 3+ allergic foods after there is no reaction; 2. Choose a single allergic food first, such as milk allergy, and try slowly to eat a little milk first, instead of eating ice cream, cream and other compound foods at the beginning; 3. Try only one kind of allergic food at a time. 3. Try only one allergic food at a time, do not try many allergic foods at the same time at the beginning; 4. If you have any questions about this, you can consult my personal homepage ( ) or through the following WeChat.