Being bitten by mosquitoes may cause insect bite dermatitis, which can be regulated by general treatment, topical medication, oral medication and other measures. 1. General treatment: keep the skin clean and hygienic, avoid squeezing, avoid scratching, avoid hot water, you can use a cool towel or ice for cold compress. 2. Topical medication: If the rash is large, edema is obvious, with obvious itching, you can use glycerine lotion, compound dexamethasone cream and other drugs for treatment. 3. Oral medication: If the itching is severe, it should be treated with oral antihistamines, such as loratadine and cetirizine. Bitten by mosquitoes, such as the need for medication need to first find a doctor to check, the drug should be used under the guidance of a professional doctor.