Burning Mouth Syndrome: Causes, Symptoms and Treatment Options

Dr Vijay's Dental SPA · Chhatarpur, New Delhi · Updated 2026-10-31

If your tongue, lips, gums or the roof of your mouth feels like it has been scalded by hot soup, even though you have not eaten anything hot, you may be dealing with burning mouth syndrome. It is a confusing and frustrating condition, mainly because the mouth usually looks completely normal despite the discomfort. At our Chhatarpur, New Delhi clinic, we see patients who have often visited several doctors before getting a clear explanation. This article breaks down what burning mouth syndrome is, why it happens, and how it is managed.

What Is Burning Mouth Syndrome

Burning mouth syndrome, sometimes called glossodynia, is a condition where a person experiences a burning, tingling or scalded feeling in the mouth without any visible sores, redness or swelling. It most commonly affects the tongue, but can also involve the lips, gums, inner cheeks, or roof of the mouth. The sensation is often described as mild in the morning and worsening through the day, though this pattern varies from person to person.

Doctors generally divide this condition into two types:

• Primary (idiopathic) burning mouth syndrome: No underlying medical or dental cause is found. It is believed to be related to changes in the nerves that sense taste and pain in the mouth.
• Secondary burning mouth syndrome: The burning sensation is linked to an identifiable cause, such as a nutritional deficiency, dry mouth, or an underlying health condition.

Possible Causes

Burning mouth syndrome rarely has a single, simple cause. It is often the result of overlapping factors, which is why diagnosis can take some time.

Hormonal Changes

This condition is noticeably more common in women, especially during and after menopause. Hormonal shifts, particularly drops in estrogen, are thought to affect how nerves in the mouth register sensation, which may explain why many women first notice symptoms around this life stage.

Nutritional Deficiencies

Low levels of certain nutrients can directly irritate the lining of the mouth or affect nerve function. The most commonly linked deficiencies include:

• Vitamin B12
• Folate (vitamin B9)
• Iron
• Zinc

A simple blood test can check for these deficiencies, and correcting them often brings noticeable relief.

Nerve-Related Factors

Some research suggests that primary burning mouth syndrome involves changes in the small nerve fibres responsible for taste and pain sensation in the tongue and mouth. This is similar in concept to nerve pain conditions seen elsewhere in the body, where the nerves send pain signals even without an obvious injury or damage to the tissue.

Other Contributing Factors

• Dry mouth, from medication side effects, mouth breathing, or Sjogren's syndrome
• Oral thrush (a fungal infection)
• Acid reflux reaching the mouth or throat
• Ill-fitting dentures causing constant low-grade irritation
• Allergic reactions to toothpaste, mouthwash, or dental materials
• Uncontrolled diabetes
• Anxiety and chronic stress, which can intensify the perception of symptoms

How Burning Mouth Syndrome Is Diagnosed

Diagnosis usually starts with ruling out visible oral problems like infections, ulcers or denture issues. From there, your dentist may recommend blood tests to check vitamin, iron and blood sugar levels, a review of your current medications, and in some cases, a referral to an ENT specialist or physician if a systemic cause is suspected. Because the mouth often looks normal, this process of elimination is an important step rather than a delay.

Treatment Options

Treatment depends heavily on whether a specific cause is identified.

• Addressing deficiencies: Vitamin or mineral supplements if blood tests show low levels.
• Managing dry mouth: Saliva substitutes, staying hydrated, and reviewing medications that may be contributing.
• Treating oral infections: Antifungal treatment if thrush is present.
• Adjusting dentures: Refitting or replacing dentures that are rubbing or causing irritation.
• Switching oral care products: Changing to a mild, additive-free toothpaste if an allergic reaction is suspected.
• Nerve-related therapies: For primary burning mouth syndrome, options may include low-dose medications originally developed for nerve pain, along with cognitive behavioural approaches to help manage the discomfort.
• Lifestyle adjustments: Avoiding spicy, acidic or very hot foods, limiting alcohol-based mouthwashes, and managing stress through relaxation techniques.

Many patients find that a combination of approaches, rather than a single fix, works best. Improvement can take a few weeks to a few months, so patience during treatment is important.

When to See a Dentist

If you have had an unexplained burning sensation in your mouth for more than two weeks, especially if it is accompanied by dry mouth, altered taste, or sores, it is worth getting examined. An early dental check-up at our Chhatarpur, New Delhi clinic can help rule out common oral causes before further testing is needed.