Mosquitoes, bees, wasps, ants, spiders…is your skin crawling yet? The itching, swelling and pain of insect bites are due to the venom and other substances biters leave behind. Sometimes there is a delayed reaction with additional symptoms (hives, painful joints, fever and swollen glands). Most people react mildly, and bites can be treated by removing the stinger, if there is one, and washing the area with soap and water; applying topical cream for the itching and a cold pack for the swelling; taking a pain reliever such as acetaminophen, if needed; and taking an antihistamine to quell the reaction.

A small number of people experience a severe reaction, with symptoms such as swelling of the throat and lips, nausea, respiratory problems, faintness, dizziness, rapid heartbeat, confusion and shock. Seek emergency help right away. People with known allergies to insect bites should carry self-injectable epinephrine (EpiPen).