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Black Hairy Tongue

Synonyms

Also known as Lingua villosa nigra, Hyperkeratosis of the tongue.

Overview

Black hairy tongue (BHT) is a relatively common, harmless condition that affects up to 13% of people. It presents as a dark, “hairy” coating on the tongue's surface, which, although alarming, is both painless and temporary. BHT can occur at any age but is more frequently seen in older adults, particularly men. The condition arises when the filiform papillae, tiny bumps on the tongue, fail to shed properly. These papillae grow longer, trapping food particles, bacteria, and fungi, which leads to the characteristic discoloration. Contributing factors include poor oral hygiene, smoking, excessive coffee or tea consumption, certain medications (like antibiotics), and a diet low in roughage. Symptoms often include a hairy or ticklish sensation on the tongue, bad breath, and occasionally an altered sense of taste. Diagnosis is straightforward, based on the tongue’s appearance. Treatment involves improving oral hygiene by brushing the tongue, using a scraper, quitting smoking, and addressing any underlying factors. With proper care, BHT typically resolves quickly.

Key Facts

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Symptoms

Typically, the sole symptom is the altered appearance of your tongue, which isn't typically accompanied by pain. However, in some instances, you might also experience:

  • Bad breath
  • Dry mouth
  • Altered or metallic taste
  • Gagging or tickling sensation in the mouth
  • Nausea
  • Hairy tongue
  • Burning sensation (if caused by fungi - Candida albicans)

While often treatable at home, mouth discoloration can signal more serious conditions. If you notice discoloration on your tongue, schedule an appointment with your doctor.

Cause

Hairy tongue occurs when the top of the tongue does not receive adequate stimulation or abrasion, resulting in a buildup of keratin, the same protein found in hair. In more severe cases, the papillae on the tongue can elongate, giving the appearance that the tongue's surface is covered with hair. When these papillae do not shed properly, food, bacteria, and sometimes yeast can become trapped, creating a mesh-like effect.

This buildup can cause the tongue to change color, appearing brown, white, green, or pink, depending on the underlying cause. Certain mouthwashes, candies, or specific bacteria and yeast can cause the tongue to appear black, a condition known as "black hairy tongue."

RiskFactors

Risk Factors Of Black Hairy Tongue

Black hairy tongue is usually harmless, but several factors can increase the chances of developing it. These include:

  • Poor oral hygiene: Not brushing or cleaning the tongue can lead to a buildup of dead cells and bacteria.
  • Tobacco use: Smoking or using tobacco products can cause discoloration and lengthening of the papillae.
  • Excessive coffee or black tea consumption: Drinking large amounts of coffee or black tea can stain the tongue and encourage bacterial growth.
  • Alcohol and intravenous drug use: Alcohol abuse and intravenous drug use are recognized risk factors for black hairy tongue.
  • Xerostomia (dry mouth): Dry mouth, often caused by medications or medical conditions, creates an environment where bacteria thrive on the tongue.
  • Medication use: Some medications, like antibiotics or bismuth-containing products (e.g., Pepto-Bismol), can disrupt the mouth's bacteria balance.
  • Weak immune system: Illnesses that weaken the immune system, such as HIV or cancer, can make it harder to control mouth bacteria.
  • Recent radiation therapy: Radiation therapy to the head and neck region is an important risk factor for black hairy tongue.
  • Diet: Liquid diets or foods that lower the tongue's pH, like herbal teas and sugars, may encourage bacterial growth.
  • Certain medications: Both systemic and local medications, including antibiotics like penicillin, aureomycin, erythromycin, doxycycline, and neomycin, have been implicated in the development of black hairy tongue.
  • Age and gender: It is more common in older adults and affects men three times more often than women.
  • Underlying medical conditions: Certain medical conditions, like HIV, advanced cancer, trigeminal neuralgia, and general illness, can raise the risk of black hairy tongue. Trigeminal neuralgia, specifically, limits tongue movement, which prevents the normal shedding of the tongue's surface cells.

Diagnosis

The diagnosis of black hairy tongue is usually straightforward and made through a clinical examination by a doctor or dentist. The condition is visually recognizable by the darkened and elongated filiform papillae on the tongue’s surface. The following steps are typically involved in the diagnosis:

I. Physical Examination

A doctor or dentist will visually inspect the tongue to evaluate its color, texture, and any abnormalities. This examination helps rule out other potential causes of tongue discoloration, such as fungal infections (like oral thrush) or other underlying medical conditions.

II. Laboratory Tests

  • Oral Swab Test: A swab from the tongue can be taken to identify any bacterial overgrowth contributing to black hairy tongue. This helps determine if specific bacteria are causing the discoloration or elongation of the papillae.
  • Fungal Scrapings: Scrapings from the affected area may be analyzed to check for fungal infections, such as yeast, which can also lead to a black hairy tongue.
  • Tongue Biopsy: In rare cases, a biopsy of the tongue tissue may be performed to rule out other conditions or confirm the diagnosis. This ensures that no underlying health issues are present.

If you suspect you have a black hairy tongue, it’s important to seek professional advice for proper diagnosis and treatment.

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Prevention

Preventing black hairy tongues involves adopting good oral hygiene practices and making lifestyle changes to reduce risk factors associated with the condition. Here are some preventive measures:

  • Limit staining substances: Reduce your intake of coffee, tea, tobacco, and alcohol, as these can contribute to discoloration and buildup on the tongue.
  • Adjust your diet: Consider a healthier diet that includes more fruits and vegetables to support oral health and reduce tongue buildup.
  • Choose the right mouthwash: Switch to a mouthwash that does not contain peroxide or other oxidizing agents, which can exacerbate the condition.
  • Consult about medications: If you or your doctor suspects that a medication may be contributing to black hairy tongue, discuss alternatives or adjustments with your healthcare provider.
  • Promote oral hydration: Ensure adequate hydration by drinking plenty of water to keep your mouth moist.
  • Use probiotics: Incorporate yogurt and probiotic supplements into your diet to maintain a healthy balance of oral bacteria.
  • Avoid excessive mouthwash use: Limit the use of alcohol-based mouthwashes and rinse with an antiseptic mouthwash instead.

If you notice changes in the appearance of your tongue or have concerns about your oral health, consult with a doctor or dentist for personalized guidance and recommendations.

Treatment

Black hairy tongue is a benign condition that can usually be managed through good oral hygiene and lifestyle changes. Although there are no specific medications approved solely for its treatment, some products may help alleviate symptoms and promote tongue health.

1. First-Line Treatment

  • Discontinue-inducing medications: If medications such as antibiotics or antipsychotics are identified as contributing factors, discontinuing these drugs is essential to address the condition. A person who develops black tongue as a result of antibiotic use may need to switch antibiotics.
  • Tongue brushing: Gently brush the tongue with a soft toothbrush or tongue scraper to remove debris and bacteria. Order Tongue Cleaners Here
  • Regular oral care: Maintain a thorough oral hygiene routine that includes brushing teeth at least twice a day and flossing to prevent plaque buildup. Explore our range of oral care products.

2. Second-Line Treatment

  • Antifungal medications: If a fungal infection is suspected or confirmed, antifungal agents like nystatin or clotrimazole may be prescribed. These are typically used in the form of oral rinses or gels to reduce fungal colonization on the tongue’s surface.
  • Topical retinoids: Topical retinoid medications, such as tretinoin (Retin-A), can be considered in some cases to promote the shedding of dead cells and exfoliate affected areas. However, their use may be limited due to potential side effects.
  • Salicylic acid mouthwash: Salicylic acid mouthwashes or oral rinses may be recommended to help exfoliate the outer layer of the tongue and remove accumulated keratin debris, aiding in the improvement of the condition.
  • Hydrogen peroxide rinse: Diluted hydrogen peroxide rinses may serve as an adjunctive treatment. The antimicrobial properties of hydrogen peroxide can help reduce bacterial and fungal overgrowth on the tongue. Order Medicines Here

Additional Interventions

  • Phototherapy: Phototherapy may be explored as a treatment option for more persistent cases of black hairy tongue.
  • Mechanical removal therapy: In severe cases, methods such as dental water jet therapy or electrocautery dissection may be utilized to mechanically remove excess papillae.
  • Surgical treatment: If other treatment options are ineffective, a doctor or dentist may perform a procedure to remove the elongated, thread-like growths on the tongue. This clipping procedure is both safe and effective, though the black tongue can reoccur afterwards.

HomeCare

While improving oral hygiene and staying hydrated are key to managing black hairy tongue, certain home-care remedies, including herbal treatments, may further help alleviate the condition. These remedies offer natural antibacterial, antifungal, and anti-inflammatory properties that support overall oral health:

  1. Oil Pulling
    It involves swishing a tablespoon of coconut oil or another edible oil in your mouth for several minutes before spitting it out.
    Benefits: This practice is believed to help remove toxins, bacteria, and plaque from the oral cavity, which may improve oral health and reduce bacterial buildup on the tongue.
    How to do it: Swish the oil in your mouth for 10–15 minutes, then spit it out and rinse with water. Repeat daily.
  2. Herbal Mouthwashes
    Rinsing your mouth with herbal mouthwashes containing natural ingredients such as peppermint oil or sage extract.
    Benefits: These herbal ingredients have antimicrobial properties that help reduce bacteria and plaque on the tongue's surface, promoting better oral hygiene.
    How to use: Prepare a natural mouthwash by adding a few drops of peppermint oil or sage extract to a glass of warm water. Swish in your mouth for 30 seconds, then spit it out. Use once or twice daily.
  3. Tea Tree Oil
    It is well-known for its potent antimicrobial properties.
    Benefits: When diluted, tea tree oil can serve as an effective homemade mouthwash, helping to fight bacterial growth and improve oral hygiene.
    How to use: Dilute 1–2 drops of tea tree oil in a cup of water and use it as a mouth rinse. Be cautious, as undiluted tea tree oil can cause irritation, and it should never be swallowed.

Note: These home-care practices should only be followed after consulting a doctor. When used alongside proper oral hygiene, they can help manage black hairy tongue naturally. However, if symptoms persist, it's important to seek further medical advice.

Complications

Black hairy tongue is typically a benign (noncancerous) and self-limiting condition; however, it can lead to certain complications or secondary issues in some cases:

  • Aesthetic concern: Although generally harmless, black hairy tongue can cause aesthetic concerns for those affected, leading to anxiety and discomfort about their appearance.
  • Altered taste sensation: Some individuals may experience a persistent metallic taste or perceive halitosis (bad breath), which can impact their enjoyment of food and beverages.
  • Halitosis (bad breath): The accumulation of keratinized debris and bacteria on the elongated papillae of the tongue can contribute to an unpleasant breath odor. This can be a source of social discomfort and may significantly affect an individual’s quality of life.
  • Burning Mouth Syndrome (BMS): This chronic condition is characterized by a burning sensation in the mouth, often affecting the tongue, lips, gums, or palate. Symptoms may worsen throughout the day, impacting eating, drinking, and overall quality of life.
  • Gagging or vomiting sensations: In some cases, individuals with black hairy tongue may experience sensations of gagging or even vomiting, particularly if the condition leads to excessive tongue coating.
  • Secondary Infections: Although rare, untreated black hairy tongue may predispose individuals to secondary bacterial or fungal infections, especially if oral hygiene is inadequate.

References

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Frequently asked questions

Typically, there are no symptoms, but it can occasionally cause a burning sensation due to bacteria or yeast buildup. Some may experience gagging, a tickling sensation in the soft palate during swallowing, bad breath, or abnormal taste.
Excellent oral hygiene is essential for long-term prevention. Individuals with a history of black hairy tongue are more prone to its recurrence.
Yes, it can be prevented or minimized through good oral hygiene, including regular brushing of teeth and tongue, using tongue scrapers, staying hydrated, and avoiding tobacco and excessive alcohol.
Black hairy tongue is usually benign and reversible. While it may appear concerning, it typically does not lead to serious health issues and can be managed with improved oral hygiene.