It can be distressing to wake up with a mysterious swollen red rash on your ankle. Could that rash be an insect bite? And ...

It can be distressing to wake up with a mysterious swollen red rash on your ankle. Could that rash be an insect bite? And what kind of bug bit you? The answers aren't so easy to figure out.

Normal Reaction When insects bite or sting, they commonly inject a small amount of venom or chemicals under the skin. This irritating beetle juice causes the reaction most of us are familiar with ...

And the itchy, red marks they leave behind will often be the only sign you have them in your home. But bedbug bites don't always cause a skin reaction, experts tell TODAY.com. And, even if they do ...