Levocetirizine hydrochloride for the treatment of atopic dermatitis. Levocetirizine Hydrochloride is a selective histamine H1 receptor antagonist agent. It is used to relieve allergic symptoms of allergic diseases, such as allergic rhinitis (including eye allergy), urticaria, angioneurotic edema, contact dermatitis, insect bite dermatitis and other allergic diseases of the skin and mucous membranes; it is used to alleviate allergic symptoms in colds. This product is well tolerated, adverse reactions are mild and mostly self-healing, common adverse reactions include drowsiness, dry mouth, headache, fatigue and so on. It is contraindicated for those who are allergic to this product and other excipients. Although levocetirizine hydrochloride can treat atopic dermatitis, it should be used under medical supervision. Drugs used to treat atopic dermatitis mainly include glucocorticoid preparations, antihistamines, and antibiotics. Glucocorticosteroids are mainly hydrocortisone, dexamethasone, prednisone, etc. Antihistamines are mainly levocetirizine hydrochloride, loratadine, astemizole, etc. Antibiotics are mainly topical mupirocin cream, fusidic acid cream, ofloxacin ointment, etc., and the patient should follow the instructions of the doctor when using the drugs. When the patient appears atopic dermatitis should go to the hospital for treatment in time, so as not to delay the condition.