Swollen upper lips can develop due to allergic reactions, injuries, or medication side effects. However, they can also stem from an infection, Crohn’s disease, and other underlying causes. This ...

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.

Sunburned lips can cause increased sensitivity, a burning sensation, peeling, and dryness. If you are in pain or have significant swelling or blisters, then you should see a doctor. You can treat ...