Cold sores occur around the mouth area and resemble blisters or a cluster of blisters. Carlos Ciudad Photography/Getty Images Cold sores are caused by the herpes simplex virus (HSV-1), which is very ...

Which cold sore treatment is best? Whether you call them cold sores or fever blisters, they’re all the same. These painful, itchy bumps that form on the lips and around the mouth make life difficult ...

Cold sores can be a frustrating and uncomfortable experience, but they’re incredibly common and usually nothing to worry about health-wise. The small, fluid-filled blisters typically appear around the ...

Cold sores are caused by the herpes simplex virus (HSV) which is often transmitted from person to person during kissing. Once it has infected the body, the virus lies dormant, generally being kept ...

This piece is part of “The Cure for Everything:” A series of stories that looks at the breakthroughs, setbacks, and overall status of vaccines and cures for hard-to-treat diseases and viruses, from ...

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 ...

No, a person should not double their Valtrex dosage for cold sores unless explicitly recommended by a doctor or healthcare professional. Valtrex is an antiviral medication that helps treat infections ...