Tongue Pain
Soreness, burning, or aching of the tongue
Quick Facts
- Type: Mouth and oral symptom
- Common causes: Bites, ulcers, irritation, infection
- Often eased by: Avoiding irritants, gentle oral care
- See a doctor: A sore or lump lasting more than 2-3 weeks
Overview
Tongue pain is soreness, burning, tenderness, or aching felt on or within the tongue. It may be localized to one spot, such as an ulcer or a bitten area, or spread across the tongue as a more general burning or rawness. Because the tongue is sensitive and constantly in use for eating and speaking, even small problems there can be noticeably uncomfortable.
Most tongue pain has a simple, temporary cause such as a bite, a mouth ulcer, or irritation from hot or spicy food, and it settles within days. Sometimes it reflects an infection, a nutritional deficiency, irritation from dental issues, or a nerve-related condition. A sore, ulcer, lump, or patch on the tongue that does not heal within two to three weeks should be checked, as persistent changes occasionally signal something that needs treatment.
It can help to note when the pain started, whether you can see any sore or patch, and what foods, products, or habits seem to worsen it. Because a persistent sore or patch that does not heal needs evaluation, a simple rule is to have anything lasting more than two to three weeks checked by a clinician.
Common Causes
Tongue pain has many possible causes:
- Injury: Biting the tongue, burns from hot food or drink, or irritation from braces or sharp teeth.
- Mouth ulcers: Canker sores cause painful, shallow ulcers on the tongue or mouth.
- Infections: Oral thrush (a yeast infection), cold sores, or other infections.
- Irritation: From spicy or acidic foods, tobacco, alcohol, or some mouthwashes and toothpastes.
- Nutritional deficiencies: Low iron, vitamin B12, or folate can make the tongue sore and smooth.
- Inflammation (glossitis): A swollen, sore, sometimes red and smooth tongue.
- Burning mouth syndrome: A burning sensation without an obvious cause, more common around menopause.
Associated Symptoms
Symptoms that accompany tongue pain help point to the cause:
- Visible sores, ulcers, blisters, or red or white patches
- Swelling, smoothness, or color changes of the tongue
- Burning or tingling, sometimes across the whole tongue
- Dry mouth or altered taste
- Difficulty eating, swallowing, or speaking
- White coating that can be wiped off, suggesting thrush
Sudden swelling of the tongue with difficulty breathing or swallowing can be a severe allergic reaction and is a medical emergency. A lump, sore, or patch that does not heal within two to three weeks also needs evaluation.
It also helps to notice whether the pain is in one spot or spread across the whole tongue. A single tender sore usually has a local cause such as a bite or ulcer, while a generalized burning across the tongue, sometimes with a dry mouth or altered taste, may point to a nutritional, infectious, or burning-mouth type of problem.
Diagnosis & Evaluation
A clinician or dentist will examine the tongue and mouth and ask about the pain, your diet, oral habits, and other symptoms. Evaluation may include:
- A careful look at the tongue, mouth, and teeth for sores, infection, or sharp edges
- Swabs: To test for infections such as thrush
- Blood tests for iron, vitamin B12, folate, or other deficiencies
- A review of medications and products that may irritate the mouth
- Referral or biopsy: For a persistent sore, lump, or patch that needs further assessment
Treatment & Management
Treatment depends on the cause; many cases of tongue pain ease with simple care:
- Avoiding irritants: Steering clear of spicy, acidic, very hot foods, tobacco, alcohol, and harsh mouthwashes.
- Gentle oral care: Soft toothbrush, mild toothpaste, and good mouth hygiene.
- Soothing measures: Cool foods, rinsing with warm salt water, and over-the-counter gels for ulcers.
- Treating infection: Antifungal treatment for thrush or other specific therapy.
- Correcting deficiencies: Iron, B12, or folate supplements when a deficiency is found.
- Dental care: Fixing sharp teeth or adjusting appliances that irritate the tongue.
When to See a Doctor
See a doctor or dentist if tongue pain:
- Lasts more than a couple of weeks or keeps returning
- Comes with a sore, lump, ulcer, or red or white patch that does not heal in two to three weeks
- Is severe or makes eating, drinking, or speaking difficult
- Comes with unexplained weight loss, a persistent neck lump, or numbness
Call emergency services immediately if the tongue swells suddenly and you have trouble breathing or swallowing, as this can be a severe allergic reaction.
Frequently Asked Questions
What causes a sore tongue?
Common causes include biting or burning the tongue, mouth ulcers, infections such as oral thrush, irritation from spicy foods, tobacco, or harsh products, nutritional deficiencies, and inflammation of the tongue. The pattern and any visible changes help identify the cause.
How can I soothe tongue pain at home?
Avoid spicy, acidic, and very hot foods, tobacco, and alcohol, use a soft toothbrush and mild toothpaste, rinse with warm salt water, and try cool foods. Over-the-counter gels can soothe ulcers. Most simple tongue pain settles within a few days.
When should tongue pain be checked by a doctor?
See a clinician or dentist if pain lasts more than a couple of weeks, if there is a sore, lump, or red or white patch that does not heal in two to three weeks, or if eating or speaking becomes difficult or you have unexplained weight loss.
Can a vitamin deficiency cause a sore tongue?
Yes. Low levels of iron, vitamin B12, or folate can make the tongue sore, smooth, and sometimes red or swollen. A blood test can detect this, and correcting the deficiency often relieves the discomfort.
When is a swollen, painful tongue an emergency?
Sudden swelling of the tongue with difficulty breathing or swallowing can be a severe allergic reaction and is a medical emergency. Call emergency services right away if this happens.
References
- Mayo Clinic. Tongue problems and burning mouth syndrome.
- American Dental Association (MouthHealthy). Tongue and mouth conditions.
- MedlinePlus, U.S. National Library of Medicine. Tongue problems.
- National Health Service (NHS). Sore or painful tongue.