If you see this appearing on your lips, it is a sign of ca….
Cold sores—also known as fever blisters—can be small, but they pack an outsized punch when it comes to discomfort and frustration. Caused by the herpes simplex virus type 1 (HSV-1), they’re highly contagious, often painful, and have a habit of returning when you least expect it. The good news? With the right knowledge, prevention…