The child was bitten by the bug long hard bumps consider the bug bite dermatitis, can be through daily care, topical drugs, oral medication and other methods of treatment. 1. Daily care: should promptly improve the child’s living environment, keep hygiene clean and tidy, change clothes, parents to avoid the child to scratch the affected area, to avoid wound infection. 2. Topical medication: you can use glycerine lotion to clean the affected area, choose to apply hydrocortisone butyrate cream, compound dexamethasone cream and other drugs, with anti-inflammatory, anti-itching effect. 3. Oral medication: secondary infection in the affected area can choose to use erythromycin capsules, amoxicillin capsules, etc., if the itching is more serious, choose to use loratadine tablets, cetirizine hydrochloride tablets and other drugs for treatment. It is recommended to take your child to the hospital in time and follow the doctor’s instructions. In the use of medication, the need to standardize the use of professional physicians under the guidance of standardized use, not blindly use the drug, in order to avoid adverse reactions.