Skin allergies with extensive redness, swelling and peeling, mainly due to contact with allergens, can be treated through daily care, oral medication, topical medication. 1. Daily care: skin allergies large red, swollen and peeling, because of contact with allergens, so we should cooperate with the doctor as soon as possible to clarify the allergens, to avoid re-exposure. Common allergens are pollen, seafood, mango, eggs and so on. Patients with localized allergies, avoid scratching the affected area with your hands, so as not to cause the skin to become infected and aggravate the condition. Usually should avoid excessive exposure to the sun, because the ultraviolet rays in the sun is relatively strong, may cause skin irritation. 2. Oral medication: For patients with large areas of redness, swelling and peeling skin allergies, antihistamines such as loratadine, cetirizine hydrochloride and other related drugs can be taken as prescribed by the doctor. 3. Local medication: If the patient’s local itching is more serious, under the guidance of a doctor, local use of glycerine lotion, compound menthol cream and other drugs coated, can play a role in anti-inflammatory, anti-itching. It is recommended that patients seek timely medical attention to avoid delaying the condition, follow the doctor’s instructions to use drugs, avoid blindly using drugs.