Read below about sores on the inner lip, including causes and common questions. Or get a personalized analysis of your sores on the inner lip from our A.I. health assistant. At Buoy, we build tools that help you know what’s wrong right now and how to get the right care.

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A.I. Health Assistant Causes for Sores on the Inner Lip

The list below shows results from the use of our A.I. Health Assistant by Buoy users who experienced sores on the inner lip. This list does not constitute medical advice.

  1. 1.Cold Sore

    Cold sores (also called oral herpes or fever blisters), are viral infections of the mouth caused by the herpes virus type 1. You were probably infected very early in life as a child when an adult kissed you. The virus stays asleep (dormant) and causes infections every now and then after exposure to lots of sun or emotional/physical stress. It is contagious when an outbreak is happening, but treatment is limited unless you are immunocompromised.

    1-2 weeks. Natural healing process starts within 24 hours of the initial sore starting.

    Rarity:
    Uncommon
    Top Symptoms:
    mouth lesions, itchy mouth, pain on the outside of the lips, lip numbness, burning pain on the outside of the lips
    Symptoms that always occur with cold sore:
    mouth lesions
    Urgency:
    Self-treatment
  2. 2.Canker Sore

    Canker sores are small, grayish-white sores in the mouth, often on the inside of the cheeks, lips, and on the tongue. No one really knows why canker sores happen, but it seems to be inherited and susceptible to vitamin deficiencies and allergies.

    1 week

    Rarity:
    Common
    Top Symptoms:
    painful mouth sore, numerous mouth sores, mouth sore surrounded by a red area, single mouth sore, oral ulcer
    Symptoms that always occur with canker sore:
    painful mouth sore
    Urgency:
    Self-treatment

    Sores on the Inner Lip Checker

    Take a quiz to find out why you’re having sores on the inner lip.

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  3. 3.Mucous Cyst (Mucocele)

    A mucocele (mucous cyst) is NOT a serious tumor. It's typically caused by repeated biting leading to leakage of mucous from damaged mucous ducts, which accumulates and creates a cyst. It's most commonly found in kids, and usually inside the lower lip but also possibly under the tongue or in the inner cheek.

    Cured with treatment. Comes back 14% of the time, though.

    Rarity:
    Common
    Top Symptoms:
    painful mouth sore, painless mouth sore, single mouth sore, sores on the inner cheek, sores on the inner lip
    Urgency:
    Primary care doctor
  4. 4.Oral Herpes

    Herpetic stomatitis is a viral infection of the mouth that causes fever and red and inflamed gums. This typically happens early in childhood.

    1-2 weeks but recurrent

    Rarity:
    Rare
    Top Symptoms:
    fever, gum pain, painful mouth sore, gum swelling, gum redness
    Symptoms that always occur with oral herpes:
    gum pain
    Urgency:
    Self-treatment

Questions Your Doctor May Ask About Sores on the Inner Lip

  • Q.Do you have a rash?
  • Q.Any fever today or during the last week?
  • Q.Have you lost your appetite recently?
  • Q.Have you been feeling more tired than usual, lethargic or fatigued despite sleeping a normal amount?

If you've answered yes to one or more of these questions, try our sores on the inner lip symptom checker to find out more.

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Sores on the Inner Lip Symptom Checker Statistics

  • People who have experienced sores on the inner lip have also experienced:

    • 10% Swollen Lips
    • 7% Lip Rash
    • 7% Sore Throat
  • People who have experienced sores on the inner lip had symptoms persist for:

    • 47% Less Than a Week
    • 26% Less Than a Day
    • 11% Over a Month
  • People who have experienced sores on the inner lip were most often matched with:

    • 60% Mucous Cyst (Mucocele)
    • 20% Cold Sore
    • 20% Canker Sore
  • Source: Aggregated and anonymized results from visits to the Buoy AI health assistant (check it out by clicking on “Take Quiz”).

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