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.

Edema is the accumulation of excess fluid in body tissues, causing noticeable swelling, commonly in the feet, ankles, and ...

Dear Dr. Roach: For over two years, my wife has been having a problem with her lower lip. From morning on, it swells, irritating her and causing her to lick her lips constantly. She has seen doctors, ...