Eczema is a delayed allergic reaction caused by a complex of internal and external excitatory factors. There is a relationship with genetic allergies. In addition, chronic digestive system diseases, mental stress, excessive fatigue, emotional changes, or infection lesions, metabolic disorders and endocrine dysfunction and other intrinsic factors, living environment, climatic conditions, certain foods and other extrinsic factors can trigger or aggravate the condition of eczema, to identify the onset of triggers for the prevention and treatment of eczema is very important! In addition, pay attention to avoid excessive scratching, salt water or soapy water scalding and other unnecessary stimulation of the skin, external drugs should be used after consultation with a professional doctor to avoid delaying the disease. It is also vital to prevent the recurrence and aggravation of eczema with dietary regimen! As nearly half of the susceptible population is allergic to certain foods to varying degrees, so try to avoid eating fish, shrimp, crab, beef and mutton, mushrooms, pollen and other fishy hair, and onions, garlic, leeks, chili, alcohol and other irritating foods; drink less strong tea, coffee. Eat less fatty, oily and greasy food that is not easy to digest. Diet should be light, vegetables to winter melon, cucumber, bitter melon, rape, cabbage, radish is appropriate.