The fluid inside cold sore blisters is filled with the active virus ... cold sore into the other person's mucous membranes ...

You might be familiar with treatments for allergies or the common cold. But what about cold sores? These fluid-filled blisters commonly found on or around the mouth are caused by the herpes simplex ...

A mouth sore is enough to make your appetite go for a toss ... Cold sores are contagious. They are fluid-filled blisters and they may burst and liquids ooze and form a crust. They usually disappear in ...

Oral herpes symptoms include fluid-filled sores on the lips, inside the mouth, and on the back of the throat. Lymph nodes in the neck might swell, too. Both viruses can spread regardless of ...