Read below about mouth redness, including causes and common questions. Or get a personalized analysis of your mouth redness 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 Mouth Redness

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

  1. 1.Vitamin B12 Deficiency

    Vitamin B12 is a vitamin crucial to healthy neurological and cardiovascular functioning. If deficient, symptoms include trouble thinking, anxiety, stomach issues, and weakness.

    Symptoms resolve completely when B12 levels return to normal.

    Rarity:
    Common
    Top Symptoms:
    fatigue, depressed mood, difficulty concentrating, history of headaches, racing heart beat
    Symptoms that never occur with vitamin b12 deficiency:
    menstrual period changes
    Urgency:
    Primary care doctor
  2. 2.Gingivitis

    Gingivitis is the infection of the gums surrounding the teeth. It is caused by plaque and/or tartar that has built up on your teeth. Plaque is a sticky layer of gunk made by food particles, mucus, and bacteria. After a while, plaque hardens to become tartar (or calculus). Plaque and tartar at the bottom of the teeth causes the gums to become irritated and infected.

    Great, with dental care and improvement in dental hygiene

    Rarity:
    Uncommon
    Top Symptoms:
    bleeding gums, gum pain, gum swelling, gum redness
    Urgency:
    Primary care doctor

    Mouth Redness Checker

    Take a quiz to find out why you’re having mouth redness.

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  3. 3.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
  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
  5. 5.Burning Mouth Syndrome

    Burning mouth syndrome (BMS) is a chronic pain syndrome defined as having a burning pain or sensation in your mouth without a cause that can be found. It happens way more often in women (7 times more likely), typically during times of hormonal changes (just before or during menopause). While no one has identified the cause, it could have to do with the makeup of saliva, damage from dentures, tics or teeth grinding, infections, and even autoimmune diseases.

    23.8% have moderate improvement with treatment. 49% see no improvement. 18.9% get worse over time. 3% of people will have it go away on its own.

    Rarity:
    Common
    Top Symptoms:
    dry mouth, changed sense of taste, tongue pain, burning sensation in the mouth, moderate mouth pain
    Symptoms that always occur with burning mouth syndrome:
    burning sensation in the mouth, tongue pain
    Urgency:
    Primary care doctor

Questions Your Doctor May Ask About Mouth Redness

  • Q.Do you have a rash?
  • Q.Are you experiencing a headache?
  • Q.Any fever today or during the last week?
  • 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 mouth redness symptom checker to find out more.

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Mouth Redness Symptom Checker Statistics

  • People who have experienced mouth redness have also experienced:

    • 14% Mouth Pain
    • 9% Dry Mouth
    • 4% Metallic / Garlic Taste in the Mouth
  • People who have experienced mouth redness were most often matched with:

    • 42% Vitamin B12 Deficiency
    • 42% Gingivitis
    • 14% Cold Sore
  • Source: Aggregated and anonymized results from visits to the Buoy AI health assistant (check it out by clicking on “Take Quiz”).

A.I. Health Assistant

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