Cold Sore Or Pimple On Upper Lip. Cold Sore or Pimple. Unlike common skin pimples cold sore bumps are caused by herpes simplex virus.

A pimple on the upper lip can be unsightly and painful 1. Both start out red but a cold sore will start to blister unlike a pimple that will be hard and no blister. The majority of people are exposed to the virus during childhood but only 30 percent of.
Pimple on Lip Line Pictures.
The blisters are usually group together in patches unlike the pimples which appear clustered. The blisters are usually group together in patches unlike the pimples which appear clustered. Pimples can appear anywhere on your lips or face. A pimple on the upper lip can be unsightly and painful 1.