Hymenoptera are the most common insects which cause allergy ( anaphylaxis ). Scientists estimate that there are more than 300,000 species of Hymenoptera in the world, though only 120,000 have been identified and named so far. Examples include : Bees; Honey-bees; Yellow jackets; Yellow hornets; Wasps and White-faced hornets.

Insect Sting Allergy
Insect Sting Anaphylaxis

Allergic reactions to insect stings can be so severe that death may occur within the few minutes following a sting. Even if not fatal, sting allergy symptoms can be frightening, including dizziness, itchy welts or massive swelling of the body, inability to breathe, swallow or speak, fainting from low blood pressure and shock .