https://www.medicinenet.com/swollen_lip/symptoms.htm

May 6, 2019 ... Swelling of the lips can arise due to different conditions. Trauma or injury to the lip and mouth area is an obvious cause of swollen lips.

https://www.medicalnewstoday.com/articles/321080.php

Feb 28, 2018 ... Find out more about what causes swollen lips, including food or environmental allergies. We also look at treatments and when to see a doctor.

https://www.healthline.com/health/woke-up-with-swollen-lip

Aug 28, 2018 ... Allergies to certain medications also may cause your lips to swell overnight. Penicillin and other types of antibiotics are among the more ...

https://www.mdedge.com/ccjm/article/94999/dermatology/persistently-swollen-lip

An otherwise healthy man has had asymptomatic swelling of his lower lip for 10 months. What is the cause? What is the treatment?

https://www.nhs.uk/conditions/angioedema/

In more serious cases, angioedema can also cause breathing difficulties, tummy ... of swelling that affect your skin or lips and you're not certain of the cause.

https://www.colgate.com/en-us/oral-health/life-stages/adult-oral-care/swollen-lip-causes--how-to-deal-with-mouth-swelling

Most people have experienced the sensation of a "fat lip," where it feels as though your lip is swollen & puffy. Learn more about swollen lip causes, here.

https://www.colgate.com/en-us/oral-health/conditions/dental-emergencies-and-sports-safety/swollen-lip-causes-and-treatments

Trauma, allergic reaction, infection and additional blood flow are swollen lip causes. When should you visit your doctor? Learn more, here.

https://www.verywellhealth.com/angioedema-overview-83233

Apr 20, 2019 ... Allergy is only one of the many possible causes ... The swelling mostly affects the face, tongue, lips, throat, arms, and legs but may become ...

https://www.nhsinform.scot/illnesses-and-conditions/skin-hair-and-nails/angioedema

Angioedema is the swelling of the deeper layers of the skin, caused by a build-up of fluid. Learn about its ... eyes; lips; genitals; hands; feet. Many people with ...

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4154022/

Eventually, the patient's lips did not fully return to normal and were persistently swollen, causing emotional and mental distress. Initial clinic visits revealed no ...