Lip and Tongue Swelling

ByBernard J. Hennessy, DDS, Texas A&M University, College of Dentistry
Reviewed/Revised Apr 2024
VIEW PROFESSIONAL VERSION

    An allergic reaction can make the lips swell. The reaction may be caused by sensitivity to certain foods or beverages, medications, illicit drugs, substances, lipstick, or airborne irritants. But frequently, the cause of the swelling remains a mystery.

    A condition called hereditary angioedema may cause recurring bouts of swelling. Nonhereditary conditions—such as erythema multiforme, sunburn, cold and dry weather, or trauma—may also cause the lips to swell. Lip swelling on its own is not dangerous. However, when lip swelling is caused by angioedema, an accompanying swelling in the mouth, throat, and/or lower airways can quickly become serious or even fatal.

    Treatment depends on the cause. When a cause can be identified and then eliminated, the lips usually return to normal. A corticosteroid ointment is sometimes used to reduce swelling caused by an allergic reaction. Occasionally, excess lip tissue may be removed surgically to improve appearance.

    Angioedema
    Hide Details
    This photo shows swelling of the lips in a person with hereditary angioedema.
    By permission of the publisher. From Joe E, Soter N. In Current Dermatologic Diagnosis and Treatment, edited by I Freedberg, IM Freedberg, and MR Sanchez. Philadelphia, Current Medicine, 2001.
    Angioedema of the Tongue
    Hide Details
    This person has a swollen tongue due to angioedema.
    SCIENCE PHOTO LIBRARY
    quizzes_lightbulb_red
    Test your KnowledgeTake a Quiz!
    Download the free Merck Manual App iOS ANDROID
    Download the free Merck Manual App iOS ANDROID
    Download the free Merck Manual App iOS ANDROID