Symptoms

• Insect bites usually cause a small red bump.
• Sometimes a small water blister occurs in the center of the bump, especially in younger children.
• Itchy Insect Bites: Bites of mosquitoes, chiggers (harvest mites), fleas, and bedbugs usually cause itchy, red bumps.
• Painful Insect Bites: Bites of horseflies, deer flies, gnats, fire ants, harvester ants, blister beetles, and centipedes usually cause a painful, red bump. Within a few hours, fire ant bites can change to blisters or pimples.