Eczema is the most common disease in dermatology. In China, eczema is often diagnosed whenever there is a rash on the skin that itches and the cause cannot be found. Atopic dermatitis is a specific type of eczema with a genetic predisposition. In addition to rashes and itching, patients often have other allergic diseases such as allergic rhinitis and asthma, and family members often have patients with these diseases. Immunoglobulin E (IgE) and peripheral blood eosinophils are often elevated in the serum, and patients may also have food allergies and strong reactions to insect bites, often in a chronic The process is often chronic and requires long-term treatment. Therefore, atopic dermatitis can also be considered as a specific type of persistent eczema. Patients can self-diagnose based on the following: 1. adults (over 12 years old) with eczema for more than 6 months; 2. other allergic diseases besides eczema, such as allergic rhinitis, asthma, etc.; 3. family members with allergic diseases. Meet the first plus any of the second and third is atopic dermatitis. Of course, if you go to the hospital, your doctor will also give you laboratory tests for immunoglobulin E (IgE) and peripheral blood eosinophils, and these laboratory changes can also help with the diagnosis. Whether the diagnosis is eczema or atopic dermatitis, it is important to visit a regular hospital dermatologist for prompt treatment. To prevent eczema, you need to pay attention to many aspects of “clothing, food, housing, transportation and washing”. The actual fact is that you will be able to get a lot more than just a few of the most popular and most popular items. The main principles of treatment are: 1, long-term use of emollients; 2, according to the rash selection of appropriate topical drugs (hormones, calcium phosphatase inhibitors, anti-itch agents); 3, oral antihistamines; 4, oral immunosuppressants; 5, medium-wave ultraviolet therapy; 6, adjuvant therapy such as probiotics. Adult patients generally do not need to abstain from eating, there are many people move to abstain from eating, in fact, there is no need.