Swollen lips may be caused by allergic reactions, injuries, chapping or sunburn, infections, and cysts called mucoceles. The swelling comes from either inflammation or built-up fluid under the skin.

Lip pimples can be caused by lipstick, sweat, poor diet, and hormonal changes. If you have a lip pimple, don't squeeze it, apply salicylic acid, and use a warm compress. If you get acne frequently ...

Lip pimples are often mistaken for cold sores, which also appear as fluid-filled bumps.However, cold sores are caused by the herpes simplex virus (HSV). There are many varieties of herpes viruses ...