Home HealthTopics Health Centers Reference Library Research
Join us on Facebook Join us on Facebook Share on Facebook

Skin Care and Diseases

Swollen lip out of nowhere



Just the other night I noticed a zit like bump on my lip and yesterday it started to swell up a little bit, but today it has swollen about half of my upper lip. Do you have any idea what causes this?


Swollen lip could be a sign of an allergic reaction (angioedema) similar to hives. In that situation though, usually the swelling is rather more uniform instead of being localized to half of the upper lip. A previously unnoticed insect bite could do the same thing. A visit to the doctor will be helpful.

For more information:

Go to the Skin Care and Diseases health topic, where you can:

Response by:

Elma D Baron, MD Elma D Baron, MD
Associate Professor of Dermatology
Director, Skin Study Center
School of Medicine
Case Western Reserve University