Anyone who’s ever developed a cold sore knows just how painful and annoying they can be. Often, the unwelcome guests don’t come unannounced — you’ll often feel the cold sore before actually seeing it.

Cold sores, also known as fever blisters, can appear on your mouth or lip and are usually caused by oral herpes or herpes simplex virus type 1 (HSV-1). “It’s extremely ubiquitous,” says Alexandra ...

So, you have a cold sore, otherwise known as oral herpes. These fluid-filled blisters often found on or around the mouth are not only painful, they may also inflict feelings of shame. “People hear ...

Cold sores are red, fluid-filled blisters that form near the mouth or on other areas of the face. The herpes simplex virus causes them, most commonly type 1. Cold sores are usually clumped together in ...

The authors do not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and have disclosed no relevant affiliations beyond their ...

Is it a cold sore or a fever blister? You have a tiny, clear, and fluid-filled blister or group of blisters on your lip, it might itch, tingle, or burn. Is it a cold sore or fever blister? Technically ...

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 ...

DEAR DR. ROACH: What do you recommend to reduce healing time for cold sores on the lip? These flare-ups are so frustrating because they can take so long to heal. Is anything available that is better ...

A canker sore—a painful white ulcer inside the mouth—might be brought on by stress. Or the wrong toothpaste. Or certain foods: tomatoes, peanuts, cinnamon. Or an iron deficiency. Or an allergy. Or a ...

Can Ulcerative Colitis Cause Mouth Sores? Ulcerative colitis (UC) is a type of inflammatory bowel disease (IBD). UC is a chronic (lasting and persistent) condition that mainly affects the colon, part ...