The bite of an insect, such as a bee or mosquito, which usually causes mild symptoms.

Symptoms of an insect bite result when an insect injects venom or other substance into the skin.

Most bites cause mild stinging or itching. Some bites can trigger a life-threatening allergic reaction. Breathing difficulty, facial swelling, dizziness, confusion, and hives are symptoms of such a reaction.

Allergic reactions to insect bites require emergency care.