The baby’s face was bitten by the bug red and swollen, clinically known as insect bite dermatitis, can be prescribed to take topical medication (such as glycerine lotion mometasone furoate ointment, etc.), oral medication (such as loratadine syrup, etc.), etc., to improve the symptoms. 1. Topical medication: after being bitten, you can follow the doctor’s instructions to apply local glycerine lotion to relieve the symptoms, you can also put ice packs on the lesions to reduce the itching sensation, you can also apply glucocorticosteroid ointment with anti-inflammatory and anti-allergic effects, such as hydrocortisone butyrate cream, mometasone furoate cream, and so on. 2. Oral medication: If the bite site redness and swelling is serious, but also oral loratadine syrup, cetirizine hydrochloride drops and other antihistamines, if the scratching secondary infection, you can use sensitive bacteria antibiotics, such as cefixime, amoxicillin and so on. If the baby’s face is bitten by the bugs appear uncomfortable symptoms, should immediately go to the hospital pediatrics or dermatology, and follow the doctor’s instructions for treatment.