Hi sir, usually when mosquito bites we get rash in my case it is same but the rash isnt going?

Mosquito Bite Rash: Many of the mosquito saliva proteins can cause immune reactions, including allergic reactions. Typically, however, most people have a variety of reactions to mosquito bites, and the symptoms change over time, depending on the amount of bites a person received. These reactions can include both immediate and delayed swelling and itching around the bite area. Topical cortisone is helpful.