Bug bites swollen chunks, but also hard not subside belong to the symptoms of insect bite dermatitis, usually mosquitoes and other bites after the occurrence of allergies or infections, mainly through the use of medication to treat, generally including topical creams and oral medication. 1. Topical ointment: usually you can use Denard cream, hydrocortisone butyrate cream and other drugs to rub the affected area, such as local infections can also be used topical clindamycin gel, mupirocin ointment and other medications to alleviate the symptoms. 2. Oral medication: If the allergic reaction caused by mosquito bites is more serious, you can take oral isoprinosine hydrochloride tablets, chlorpheniramine maleate tablets and other antihistamines to fight allergies, such as fever, fatigue and other symptoms of infection, you can follow the doctor’s instructions to take oral amoxicillin, levofloxacin and other antibiotics to relieve. If anaphylactic shock and other symptoms occur, you need to go to the hospital immediately for rescue. In addition, it is necessary to pay attention to the hygiene of the surrounding environment and carry out mosquito extermination to avoid the recurrence of the above situation. Drugs must be used under the guidance of a doctor, if the symptoms are not relieved after the use of medication, it is recommended to seek medical treatment in a timely manner.