When we say "cold sore," you probably know what we're talking about: the annoying red bump on your lip that itches and burns. Cold sores are pesky, and uncomfortable, and can make you feel ...

First, you’re not alone. Up to 80% of American adults have the herpes simplex virus (HSV-1), which can cause cold sores (also known as fever blisters), according to Johns Hopkins. The viral infection ...

Waking up with a spot on your lip is never a good feeling. Often cold sores or pimples are to blame, though telling the difference isn't always easy. They can look similar on the surface, but their ...

So, what exactly are cold sores? According to Dr Kakai Kulabusia, a medical immunology specialist, these are small blister-like spots that appear in or around the outside of the mouth and are caused ...

Cold sores are caused by the herpes simplex virus (HSV). Once it has infected the body, the virus lies dormant, but may reactivate and cause a cold sore at any time, especially when the immune system ...

A mysterious bump near your lips can be unsettling. Is it a harmless pimple or something more serious like a cold sore? Distinguishing between the two is crucial for effective treatment and prevention ...

So, what exactly are cold sores? According to Dr Kakai Kulabusia, a medical immunology specialist, these are small blister-like spots that appear in or around the outside of the mouth and are caused ...

Cold sores are small, painful, fluid-filled blisters or sores that appear on the lips, mouth or nose that are caused by a virus. They're ugly. They're painful. And they often hang around for days.

Add Yahoo as a preferred source to see more of our stories on Google. Photo Illustration by Victoria Sunday/The Daily Beast/Getty Images When the seventh season of Love Island USA premiered, an X user ...