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.

Immediately after you get lip filler, the lips can look a little uneven. The day after, you can expect your lips to feel tender and look larger than the final result. After three days have gone by, ...

Angioedema, a type of swelling that affects the skin and tissues of the body, commonly affects the lips. Angioedema is a type of swelling that affects the deep tissues of the skin and other systems.