The eczema of western medicine is equivalent to the wet sores of Chinese medicine, which need to be diagnosed and treated, and can be divided into dampness-heat impregnated skin evidence, blood deficiency and wind dryness evidence, and spleen deficiency and dampness evidence. 1. Dampness and heat embedded in the skin. Symptoms: acute onset, short course, herpes mound, red lesions, burning itching, scratching oozing; accompanied by body heat not Yang (feel the whole body heat, touch the skin but not very hot), upset thirst, short red urine (small amount of urine, dark yellow color), dry stools and other symptoms. The treatment is to clear away dampness and heat to stop itching. The formula is Dioscorea villosa combined with gentian diarrhea and liver soup plus subtractions. 2. Blood deficiency and wind dryness syndrome. Symptoms: recurrent attacks, long duration of the disease, intolerable itching, hyperpigmentation, or rough and hypertrophied lesions, or dark lesions, itching aggravated by washing with soap and water or by heat. The treatment is to dispel wind and stop itching (stop itching by removing the wind that invades the surface of the muscle), nourish blood and moisturize the skin. The formula is Four Substances Anti-Wind Drink or Angelica Drink with subtractions. 3. Spleen deficiency and dampness syndrome. Symptoms include: papules, itching, flushed lesions, slow onset, erosion and oozing after scratching, visible scales; accompanied by abdominal distension and loose stools (thin and unformed feces), and lack of energy. The treatment is to strengthen the spleen and relieve dampness to stop itching. The formula is to remove dampness and stomach ling soup or ginseng ling baizhu san plus subtractions. After the appearance of eczema should consult a doctor in time, the adverse effects and contraindications of the above formula are not clear, do not use the drug on your own.