Flea bites and bedbug bites are both treated topically, but there are some differences. Learn how to tell them apart. ... Bed bug bites can also cause an allergic reaction.

Flea and bed bug bites are usually a sign that you’re dealing with an infestation. If you develop symptoms of either bite, clean the area well with mild soap and water.

Flea bites are itchy bites that tend to appear in clusters. Scratching the bites can cause an infection, which may result in a rash or blisters. Fleas are tiny bugs that don’t grow much larger ...