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Cold sores are painful blisters on the lips that can form unsightly crusts. They are very common and are caused by the herpes simplex virus. The medical name for facial cold sores is herpes labialis.

Fed up of the embarrassment of getting recurring cold sores? You are not alone. Here, a dermatologist gives us the facts on what causes cold sores, how we should treat them and the biggest ...

COLD SORES HAVE a way of appearing at the worst possible ... like the roof of your mouth or even in your eyes. “This is sort of the ultimate relationship of a lifetime,” says Leib.

Herpes sores can affect many areas of the body, including the mouth, genitals, and eyes. Herpes sores look like blisters filled with fluid, which can break open and then crust before healing.