1, what is eczema Eczema is a common inflammatory skin disease caused by a variety of internal and external factors. It is characterized by intense itching, polymorphic lesions, symmetrical distribution, a tendency to exude, and easy recurrence. Eczema has a complex etiology and is often caused by the interaction of multiple internal and external factors. Common external factors: ① food allergies such as fish, shrimp, crab, beef and mutton; ② inhalants such as pollen, dust mites, fur, microorganisms (bacteria, fungi); ③ physical factors such as sunlight, heat, dryness; ④ chemical factors such as cosmetics, soap, synthetic fibers, etc. Endogenous factors: Allergic constitution is the main factor, which can change with age and environment. In addition, neuropsychiatric factors, chronic infections in the body, endocrine, etc. can also aggravate eczema. The clinical manifestations of eczema are diverse and can include erythema, blisters, papules, vesicles, etc. Repeated scratching can also cause thickening of the skin. The actual process and rash are divided into three phases: acute, subacute, and chronic. 2, eczema how to treat it First of all, avoid local stimulation such as hot water, violent scratching, avoid taking easily allergenic and irritating foods such as shrimp and crab, wine, spicy food, but do not have to blindly avoid the mouth. The actual skin is usually moisturized, which can play a role in protecting the skin. There are more topical medications for eczema, so be careful to choose the right medication. If the eczema rash is relatively limited and not broken, you can choose furnace glycerine lotion, or short-term use of glucocorticoid ointment, external hormones do not have to be overly anxious, under the guidance of the doctor with some suitable strength of hormone ointment is safe and effective. Generally use 1-2 times a day, the number of times you apply should not be too much, eczema is relatively light once a day can be, avoid long-term use of large areas. Avoid strong hormone ointments for thin skin and infant skin as much as possible, and choose weak ones. If the rash has vesicles and exudates more, use physiological saline or boric acid solution to do cold wet compresses, if the rash is more extensive, the effect of local topical drugs is not good, you can consider oral anti-allergy drugs, commonly used paracetamol, loratadine, cetirizine, etc., can choose one or two combined use. Patients with recurring and serious conditions should not use medication on their own, but seek the guidance of a specialist for treatment.