Redness after itching and scratching is common in artificial urticaria, which should be treated by strengthening skin care, topical medication, oral medication and other measures. 1. Strengthen skin care: first of all, keep the skin clean and hygienic, avoid scratching, choose loose, comfortable clothes, reduce physical friction. Avoid high temperature. 2. Topical medication: you can apply glycerine lotion, fludioxonil acetate cream, hydrocortisone ointment and other drugs, which can play the role of anti-inflammatory, anti-allergic, anti-itching, swelling. 3. Oral medication: Oral antihistamine medication, such as ebastine tablets, cetirizine tablets and so on. Itchy skin after scratching red, you should consult a doctor in a timely manner, under the guidance of the doctor’s treatment, the specific use of drugs need to follow the doctor’s instructions.