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Learn about your white mouth sore, including causes and common questions. Or get a personalized analysis of your white mouth sore from our A.I. Symptom Checker. At Buoy, we build tools that help you know what’s wrong right now and how to get the right care.

Your White Mouth Sore May Also be Known as:
White mouth blister
White mouth bump
White mouth lump

Top 10 White Mouth Sore Causes

  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.

    You can safely stay home or try some minor treatments. As a viral infection, it will go away on its own without antibiotics. Balm mint cream (1%) or topical rhubarb-sage cream may improve symptoms, but it's not standard treatment.

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

    EBV Mononucleosis is a clinical syndrome characterized by fever, sore throat, and swollen lymph nodes.

    You should visit your primary care physician within the next 24 hours. Diagnosis is confirmed by looking for antibodies against EBV. Treatment involves supportive care (hydration, antipyretics, and analgesics, such as acetaminophen and ibuprofen). Aspirin should not be given to children because of the possibility of Reye syndrome. It is also recommended that you do not do any strenuous physical activity and contact sports in the initial 3 to 4 weeks of illness due to the potential for splenic rupture.

    Rarity:
    Common
    Top Symptoms:
    fatigue, headache, loss of appetite, abdominal pain (stomach ache), cough
    Symptoms that never occur with mononucleosis infection:
    rectal bleeding
    Urgency:
    Primary care doctor
  3. 3.Strep Throat Requiring Throat Swab

    Strep throat is a bacterial throat infection that can make the throat feel sore and scratchy. Only a small portion of sore throats are the result of strep throat. And, if you do not show enough signs of a true strep throat, testing may be needed before treatment is begun.

    You should visit your primary care physician within the next 24 hours, where a diagnosis can be made via a "rapid antigen test" (it's a throat swab). Treatment with simple antibiotics would be given only if the test is positive. It is important to get treatment, however, because of the possibility of getting a disease called "rheumatic fever" after the strep throat infection.

    Rarity:
    Common
    Top Symptoms:
    fatigue, nausea, sore throat, fever, rash
    Symptoms that always occur with strep throat requiring throat swab:
    sore throat
    Symptoms that never occur with strep throat requiring throat swab:
    general weakness
    Urgency:
    Primary care doctor
  4. 4.Middle Ear Infection

    Middle ear infections, also known as otitis media, occur when the tubes that carry sound become clogged with debris like mucus.

    Your should go to your primary care doctor in the next day for an ear examination. It is likely your doctor will prescribe an antibiotic to treat the infection.

    Rarity:
    Common
    Top Symptoms:
    fatigue, sore throat, fever, new headache, mucous dripping in the back of the throat
    Symptoms that always occur with middle ear infection:
    ear canal pain
    Symptoms that never occur with middle ear infection:
    vertigo (extreme dizziness), face weakness, facial numbness
    Urgency:
    Primary care doctor
  5. 5.Hyperparathyroidism

    Hyperparathyroidism is a disorder in which the parathyroid glands in the neck are overactive and produce too much parathyroid hormone (PTH). This hormone causes calcium to be released from bones and into the blood.

    You should visit your primary care physician who will likely coordinate care with a specialist. Hyperparathyroidism is usually treated with surgery that involves removing the glands to make sure your blood calcium levels remain normal.

    Rarity:
    Rare
    Top Symptoms:
    fatigue, depressed mood, abdominal pain (stomach ache), irritability, nausea or vomiting
    Urgency:
    Primary care doctor

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  6. 6.Hepatitis a

    Hepatitis A is inflammation of the liver caused by the hepatitis A virus (HAV) and usually spreads through contact with infected blood. It can also spread through sex with an infected person and from mother to baby during childbirth.

    You do not need treatment as no specific treatment exists for Hepatitis A. You can cope with symptoms with rest, snacking for the nausea and stop drinking alcohol to give your liver a rest.

    Rarity:
    Rare
    Top Symptoms:
    fatigue, nausea, nausea or vomiting, loss of appetite, abdominal pain (stomach ache)
    Urgency:
    Primary care doctor
  7. 7.Piriformis Syndrome

    Piriformis syndrome is a condition when a muscle spanning the lower spine to the top of the thighbone presses upon the sciatic nerve, causing pain and numbness.

    You should visit your primary care physician, who would perform a physical exam, looking for other possible causes of your symptoms. Treatment involves NSAIDs (Ibuprofen), massage, and physical therapy.

    Rarity:
    Common
    Top Symptoms:
    pelvis pain, butt pain, pain when passing stools, leg numbness, back pain that shoots down the leg
    Urgency:
    Primary care doctor
  8. 8.Hand - Foot - and - Mouth Disease

    Hand-foot-and-mouth disease is a mild, contagious viral infection common in young children. It is characterized by sores in the mouth and a rash on the hands and feet.

    You can safely treat this condition on your own by using a topical oral anesthetic to relieve the pain of mouth sores. Over-the-counter pain medications other than aspirin, such as acetaminophen (Tylenol) or ibuprofen (Advil, Motrin) may help relieve general discomfort.

    Rarity:
    Rare
    Top Symptoms:
    loss of appetite, cough, fever, sore throat, new headache
    Symptoms that always occur with hand-foot-and-mouth disease:
    spontaneous skin changes
    Urgency:
    Self-treatment
  9. 9.Viral Throat Infection

    Viral pharyngitis is an inflammation of the pharynx, the part of the throat between the nasal cavity and mouth, which causes throat pain.

    Antibiotics are not useful for viral infections. You can gargle with salt water and use over the counter pain medication like Tylenol to treat your painful or sore throat.

    Rarity:
    Common
    Top Symptoms:
    sore throat, cough, congestion, fever, hoarse voice
    Symptoms that always occur with viral throat infection:
    sore throat
    Symptoms that never occur with viral throat infection:
    being severely ill
    Urgency:
    Self-treatment
  10. 10.Viral Infection of the Larynx (Voice Box)

    Acute laryngitis is an inflammation of the voice box (larynx) due to infection.The vocal cords are located inside the larynx. Normally, the vocal cords open and close freely, but in laryngitis, they become inflamed. This swelling causes distortion of the sounds produced by air passing over them, making one's resulting voice sound hoarse.

    You can safely treat this medical condition by yourself, as it is likely a viral infection. Home remedies such as gargling with salt water and staying hydrated will likely be enough to restore a lost voice.

    Rarity:
    Common
    Top Symptoms:
    sore throat, fever, runny nose, dry cough, hoarse voice
    Urgency:
    Self-treatment

Questions Your Doctor May Ask About White Mouth Sore

  • Q.How many sore/blister/bumps do you have?
  • Q.When did you develop the sore/blister/bump?
  • Q.Is the sore/blister/bump painful to the touch?
  • 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, check our white mouth sore symptom checker.

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White Mouth Sore Symptom Checker Statistics

  • People who have experienced white mouth sore have also experienced:

    • 6% Sore Throat
    • 6% Neck Bump
    • 3% Burning Tongue Pain
  • People who have experienced white mouth sore had symptoms persist for:

    • 47% Less Than a Day
    • 28% Less Than a Week
    • 10% Over a Month
  • People who have experienced white mouth sore were most often matched with:

    • 23% Cold Sore
    • 23% Mononucleosis Infection
    • 15% Strep Throat Requiring Throat Swab

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Try our white mouth sore symptom checker to diagnose your current condition

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Check my white mouth sore symptoms

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