What Causes an Insect Bite & Sting Allergy?
An allergic reaction to an insect sting occurs when there is an overreaction from the body’s immune system to the venom of an insect. The body produces an allergic substance called an immunoglobulin (IgE) antibody, which reacts to the protein in the venom, usually at the first sting or later. IgE triggers the release of various chemicals, including histamine that causes the allergic reaction.
