Cold sores, often linked to HSV-1, are common and usually unrelated to sexual contact, unlike HSV-2, which is an STD.

Medically reviewed by Anju Goel, MD Herpes simplex virus (HSV) is a common—and one of the most confusing—infections. Two ...

Just a few days before your period, you might have noticed blisters or a single blister on your lower lip. Though not common, ...

Cold sores, or fever blisters, are precisely herpes simplex virus type 1 (HSV-1) that appear as fluid-filled blisters around ...

A 5-gram tube of Zovirax cream runs more than $200. A month’s supply of valacyclovir (500 milligrams) tablets costs between ...

Cold sores are mouth herpes that appear as blisters beneath the skin’s surface around the mouth or on the lips. They are a ...