There is no fastest way to reduce swelling and itching after being bitten by mosquitoes, but most of the mosquito bites can disappear on their own, and some patients can choose medication for treatment. Most patients are bitten by mosquitoes, can appear small red pimples, due to autoimmune reaction, after a period of time can disappear on their own, do not need to worry too much. After being bitten by mosquitoes, a small number of patients will have petechiae, pimples, itching and other symptoms at the site of the bite. They can be treated with medications, such as glycerine lotion, hydrocortisone butyrate ointment and other topical medications for local application. In addition, it is recommended that patients with more serious symptoms after being bitten by mosquitoes go to the doctor in time and follow the doctor’s instructions for treatment to avoid delaying the condition.