If you get stung by a wasp, the area may become red and swollen ... Epinephrine helps your body relax and helps lower blood pressure during an allergic reaction. How Long Does a Wasp Sting ...

Common wasp sting symptoms include pain in the sting area, swelling and redness that extends out of the sting site, itching, heat at the site of sting, and potentially hives if your body has a ...