Many different types of insects (bugs) can bite you. Most insect bites itch, but the bites themselves aren't serious. The main problem with insect bites is that:
Common biting insects in the United States:
None of these insects has venom (poison).
Most bites result in:
Sometimes, you might have:
Fleas can sometimes cause an allergic reaction even if you're not bitten.
If you think you're having an allergic reaction, go to the hospital right away. If you know you're allergic, you should always carry epinephrine (medicine to treat a serious allergic reaction) with you. You inject the epinephrine into your own skin through a thin needle, or someone does it for you.
Doctors will tell you to: