Swollen Lip

Swollen Lip Symptoms & Signs

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Symptoms & Signs

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. Allergic reactions, either to foods, medications, or other substances, can often be accompanied by swelling of the lips. This may be accompanied by other allergic symptoms, such as hives and itching. Angioedema is a condition in which there is swelling of the tissue beneath the skin, and this is often concentrated around the eyes and lips. Some infections (such as herpes simplex virus infection) can result in blisters (sometimes referred to as cold sores) and localized swelling of the lips. Infections and inflammatory conditions of the skin can also lead to inflammation and swollen lips (cheilitis). Less commonly, medical conditions or illnesses that affect the entire body may cause lip swelling, sometimes in association with fluid retention or swelling in other areas of the body.

Medically Reviewed by a Doctor on 1/20/2017

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REFERENCE:

Kasper, D.L., et al., eds. Harrison's Principles of Internal Medicine, 19th Ed. United States: McGraw-Hill Education, 2015.

Causes of Swollen Lip
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      • Bug bites and stings introduction
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      In This Article
      Burns (First Aid) Article
      • Introduction to burns
      • How are burns classified?
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    • Cellulitis Cellulitis is an acute spreading bacterial infection below the surface of the skin characterized by redness, warmth,...learn more »
    • Cold Sores (Nongenital Herpes Simplex Infections) Herpes simplex infections are common and when they appear around the mouth and lips, people often refer to them as "cold sores"...learn more »
      In This Article
      Cold Sores (Nongenital Herpes Simplex Infections) Article
      • Herpes simplex infections (nongenital cold sores) facts
      • What are herpes simplex infections?
      • What causes cold sores?
      • What are the risk factors for herpes simplex infections?
      • What makes herpes (cold sores) recur?
      • Are cold sores contagious?
      • How do cold sores spread?
      • What is the incubation period for cold sores?
      • What is primary oral herpes?
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      • How long do cold sores last?
      • What is the treatment for cold sores, are there any home remedies, and what medications treat oral herpes?
      • What are the possible complications of oral herpes (cold sores)?
      • What is the prognosis for oral herpes (cold sores)?
      • Is it possible to prevent cold sores?
    • Eczema Eczema refers to skin inflammation. There are many different types of eczema that produce symptoms and signs that range from...learn more »
      In This Article
      Eczema Article
      • Eczema facts
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    • Food Allergy The most common food allergies are to eggs, nuts, milk, peanuts, fish, shellfish, strawberries and tomatoes. Symptoms and signs...learn more »
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      Food Allergy Article
      • Food allergy facts
      • What is a food allergy?
      • What causes allergic reactions to food?
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      • What are the most common food allergies?
      • What is cross-reactivity?
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      • What types of health care specialists diagnose and treat food allergies?
      • How do health care professionals diagnose food allergies? What tests do health specialists use to diagnose food allergies?
      • What is the treatment for a food allergy?
      • Are allergy shots effective in preventing or decreasing food allergy?
      • What are complications of food allergies?
      • What is the prognosis (outlook) for food allergy?
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    • Hives (Urticaria & Angioedema) Hives, also called urticaria, is a raised, itchy area of skin that is usually a sign of an allergic reaction. The allergy may be...learn more »
    • Hunter Syndrome (Mucopolysaccharidosis II, MPS II) Hunter syndrome (mucopolysaccharidosis II, MPS II) is an inherited or genetic disease. Signs and symptoms of Hunter syndrome...learn more »
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      Hunter Syndrome (Mucopolysaccharidosis II, MPS II) Article
      • Hunter syndrome definition and facts
      • What is Hunter syndrome?
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    • Myxedema Coma Myxedema coma is the loss of brain function due to severe longstanding low levels of thyroid hormone in the blood. Myxedema coma...learn more »
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    • Sunburn (Sun Poisoning) Sunburn is caused by overexposure to UV radiation from the sun. UV rays can also damage the eyes. Repeated overexposure to UV...learn more »
      In This Article
      Sunburn (Sun Poisoning) Article
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Other Causes of Swollen Lip
Examples of Medications for Swollen Lip


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