There are many kinds of itching medicines for eczema, which can be divided into two categories: topical anti-itch medicines and oral desensitizing anti-itch medicines. First, the external anti-itch drugs can be divided into anti-itch lotion, anti-itch ointment two categories: 1. anti-itch lotion: commonly used glycerine lotion (high security, wide range of adaptability), zinc oxide lotion, dehumidification anti-itch lotion, Chuanbai anti-itch lotion (head seborrheic eczema application), etc. 2. anti-itch ointment: dehumidification itching ointment, butylhydroxy acid cream, salbutamol ointment, boric acid zinc oxide ice ointment etc. Second, desensitization drugs are divided into short-acting and long-acting two kinds of drugs: 1. short-acting desensitization drugs: such as paracetamol, but the short duration of the action of the itch, the side effects of a relatively large number, rarely as a desensitizing drug for desensitization of the first choice of kinds of itch, clinical desensitization can be used as an auxiliary desensitization of the drug. 2. long-acting desensitization drugs: this is the most commonly used desensitization drugs, such as cetirizine (the side effects of the central sedation is large), orotate (a relatively new type of desensitization drugs), chlorothalonil (a relatively new type of desensitization drugs). Desensitizing drugs), loratadine (more widely used desensitizing drugs), epinastine and ebastine.