Fever blisters, also known as cold sores, are a common annoyance caused by the herpes simplex virus (HSV-1). These clusters of small, fluid-filled blisters typically appear on the lips or around the ...

A cold sore on the lip can be uncomfortable. It usually heals within a week or two. A cold sore looks like a blister. Other skin issues, like pimples and canker sores can also appear on the lips and ...

A fever blister flare-up can heal without treatment, but there are many effective ways to help relieve the pain and promote healing. This includes at-home remedies and prescription medications. Share ...

Waking up with a spot on your lip is never a good feeling. Often cold sores or pimples are to blame, though telling the difference isn't always easy. They can look similar on the surface, but their ...