What Is a Cold Sore? A cold sore is a group of tiny, painful blisters caused by the herpes simplex virus (HSV). They're also called fever blisters or herpes simplex labialis. Up to 90% of people ...

Anyone who has suffered from a cold sore outbreak can attest that the experience is far from pleasant. A small canker-like sore develops somewhere on the lip, and it continues to grow and become more ...

Wondering how to get rid of a cold sore? Although these normally clear up on their own, cold sores can be painful while they ...

While cold sores are not dangerous, they can be irritating — especially if you suffer from frequent outbreaks. Although they most commonly appear around the lips and mouth, cold sores can spread to ...

Cold sores, or oral herpes, are blisters that form on or near the lips, nose, or mouth. In some cases, cold sores can form on the tongue. HSV-1 can transmit between people through mouth-to-mouth ...

It can be tempting to pop a cold sore. However, popping a cold sore releases infectious fluid from inside the blister, increasing the risk of further cold sores, infection, and scarring. In this ...

Canker sores form inside the mouth on soft tissues like gums, cheeks, or under the tongue, and are not contagious. Cold sores usually appear on or around the lips and are caused by herpes simplex ...