Eczema, called wet sores in Chinese medicine, is an allergic inflammatory skin disorder. It is named because the lesions are always wet, oozing and crusty. Its clinical characteristics are symmetrical distribution of lesions, polymorphic damage, intense itching, tendency to exude, recurrent episodes, and tendency to become chronic. According to the course of the disease, it can be divided into three categories: acute, subacute and chronic. Both men and women, young and old, can develop the disease. Damp sores are caused by an intolerant endowment, a poor diet, or excessive consumption of spicy and stimulating meat and fishy things that move the wind, damage to the spleen and stomach, loss of healthy movement, internal growth of dampness and heat, and external exposure to the wind, resulting in internal and external evil, with wind, dampness and heat infiltrating the skin. The treatment of this disease is to clear heat and dampness to relieve itching as the main treatment method. In acute cases, the main treatment is to clear heat and dampness, while in chronic cases, the main treatment is to nourish blood and moisten the skin. It is advisable to use mild drugs for external treatment to avoid aggravating the condition. 1. Acute eczema: when there is only flushing and papules at the beginning, or a few blisters without exudate, external treatment is appropriate to clear heat and soothe, avoid stimulation, and use the decoction of bitter ginseng, Phellodendron, groundnut, and thorny mustard to clear heat and relieve itching, or apply topically with triphala lotion and furnace glycolic lotion. If the blisters are erosion and exudation is obvious, external treatment should be astringent, anti-inflammatory, and promote epidermal recovery, you can use the decoction of Phellodendron, raw ground elm, Amaranthus, wild chrysanthemum, or 10% Phellodendron solution, or 2%~3% boric acid water cold compress, and apply with Qing Dai San sesame oil. When acute damp sores are reduced in late nourishing water, external treatment is appropriate to protect the lesions, avoid stimulation, promote keratin regeneration, clear residual inflammation, and can be applied externally with Huang Lian cream and Qing Dai cream. 2, subacute damp sores: the principle of external treatment is anti-inflammatory, anti-itch, dry damp, astringent, choose Qing Dai cream, 3% black bean distillation oil, 5% black bean distillation oil ointment applied externally. 3, chronic eczema: can use a variety of ointments, emulsions, according to the degree of itching and skin hypertrophy to add different concentrations of anti-itching agents, keratin and dissolving agents, generally can be applied externally 5% sulfur ointment, 10% ~ 20% black bean distillate ointment. Life avoid scalding with hot water, soap and other irritants, should avoid scratching to prevent infection, patients need to abstain from spicy and stimulating food. The text involves the need for medication, please go to a regular hospital under the guidance of a doctor!