What should you know about an inflamed lower lip?

Cheilitis means inflammation of the lips. The lower lip may feel rough, tight, cracked, sore, itchy, or stinging. Common irritants include lip licking, saliva, fragranced products, cosmetics, toothpaste, wind, and sun. Contact allergy can cause swelling or scaling after exposure to a product. Crusting, blisters, marked swelling, or a persistent one-sided sore may need a closer examination because several conditions can look alike.

Stop newly introduced lip products and avoid licking, biting, peeling, or scrubbing the lip. Use a bland protective moisturiser through the day; [Emollient Therapy](/treatments/medical-dermatology/emollient-therapy/) can help restore the skin barrier. A clinician may recommend [Topical Corticosteroids](/treatments/medical-dermatology/topical-corticosteroids/) for selected inflammatory causes, but steroid creams should not be used casually on a sore that may be infected.

Seek prompt care if swelling develops quickly, the lip becomes very painful, or redness spreads. Emergency help is needed for swelling of the tongue or throat, trouble breathing, faintness, or difficulty swallowing. Arrange a medical review when cracking, bleeding, crusting, or a sore persists despite removing irritants.

Ask which products or habits may be contributing, whether the pattern suggests allergy or infection, and whether testing is needed. Ask how long to use a prescribed treatment and what changes would mean you should return.