Insect, Spider, and Scorpion Bites and Stings

Most insect bites are harmless and cause only minor swelling or itching. But if you're allergic to insects, such as wasps or bees, a sting can cause a life-threatening allergic reaction. The venom (poison) from scorpions and certain spiders can also be deadly, although this is rare. Knowing when to get emergency care could save your life.