If you see this appearing on your lips, it is a sign of ca….
Cold sores—also known as fever blisters—can show up at the worst times. Caused by the herpes simplex virus type 1 (HSV-1), these painful little blisters are more common than you might think. They often appear around the mouth, lips, or nose, and while they’re usually not dangerous, they can be stubborn, recurring, and highly…