Cold sores form clusters of fluid-filled blisters that often burst and ooze. Pimples on the lip line are red bumps with whiteheads, not blisters. Cold sores are contagious, but pimples are not. Cold ...

If you have ever noticed tiny white or yellowish spots on the edges of your lips, you may have wondered whether they indicate a health problem. These small bumps can look unusual, especially when they ...