It's worth noting that sometimes people see their healthcare provider for what they think is a pimple on the lip, but it is actually a cold sore. While lip pimples develop on the skin around the ...

Rosie O'Donnell posted yet another video, this time discussing the unsightly sores on her lip while blasting Trump and his supporters.

"Both lip pimples and cold sores can pop up on the border of the lips, and a lip pimple can be mistaken for a cold sore," says Ko. However, cold sores, also known as oral herpes, are caused by the ...