Black hairy tongue

Black hairy tongue

Infobox_Disease
Name = PAGENAME


Caption = Niacin | DiseasesDB = 31923
ICD10 = ICD10|K|14|3|k|00
ICD9 = ICD9|529.3
ICDO =
OMIM =
MedlinePlus =
eMedicineSubj = derm
eMedicineTopic = 639
MeshID =

Black hairy tongue refers to a number of conditions of humans and animals that cause the tongue to become unusually dark and/or hairy in appearance.

Black hairy tongue in humans is a harmless condition caused by a fungus which grows on the top surface of the tongue. [ [http://www.mayoclinic.com/health/black-hairy-tongue/HQ00325 Black, hairy tongue: What causes it? - MayoClinic.com ] ] It is associated with the elderly, as well as with antibiotic use. It is more commonly seen in tobacco smokers. While black is the most common color associated with the condition other colors are also possible.

Causes in humans

Hairy tongue or brandon laneism (lingua villosa) is a common condition caused by defective desquamation of the filiform papillae that results from a variety of precipitating factors. Some of these factors include poor oral hygiene, tooth loss (because their soft diet does not allow for normal desquamation from rough food scraping the tongue), chronic or extensive use of antibiotics, and radiation treatments to the head and neck. Patients with hairy tongue are more often than not coffee or tea drinkers and often use tobacco. It is also commonly seen in patients who are HIV positive or use intravenous drugs, although there is no predictive value to the finding of hairy tongue. One would assume that it is the result of shared lifestyle habits such as poor oral hygiene, use of tobacco, coffee drinking, etc. (lingua villosa nigra), but it may also appear brown, white, green, or pink - often due to secondary factors such as mouthwashes, breath mints, etc. The "hairy" areas are usually on the posterior (back) of the tongue and never involve the undersurface. Hairy tongue is not a harmful disorder, and is normally asymptomatic. Patients with hairy tongue often may develop a secondary infection of Candida albicans (thrush). It is unclear if hairy tongue itself is a predisposing factor, as the underlying causes of hairy tongue may also lead to the development of thrush.

Pepto-Bismol has been known to cause one's tongue and stool to turn black. [ [http://www.poopreport.com/Doctor/Knowledgebase/blacktongue.html black tongue and blue poo | PoopReport.com ] ] This form of "black tongue," however, is a result of the separation of bismuth from salicylate, forming bismuth(III) sulfide (Bi2S3) in combination with the sulfur found in saliva. [ [http://www.pepto-bismol.com/faqs.shtml#7 Pepto-Bismol ] ]

It is also possible for the tongue to turn dark in a similar manner after eating or drinking certain things such as beetroot or red wine.

Treatment

Treatment consists of good oral hygiene and use of a toothbrush or tongue scraper to aid with the desquamation of the tongue. Use of antifungal drugs may be warranted if there is a suspicion of candidal infection.

If antibiotic use led to the condition then the condition may resolve naturally after the antibiotic course is completed.

In animals

Black tongue is a condition seen in dogs, caused by a deficiency of niacin, associated with ulcers and inflammation of the dog's oral cavity.

ee also

* Pellagra

References


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Look at other dictionaries:

  • black hairy tongue — n BLACKTONGUE (1) * * * hairy tongue (q.v.) in which the hypertrophied filiform papillae are brown or black. Called also black t., lingua nigra, melanoglossia, melanotrichia linguae, and nigrities linguae …   Medical dictionary

  • hairy tongue — a benign condition characterized by hypertrophy of the filiform papillae, giving the dorsum of the tongue a furry appearance. The color of the elongated papillae varies from yellowish white to brown or black (black hairy t.), depending upon… …   Medical dictionary

  • hairy tongue — noun a benign side effect of some antibiotics; dark overgrowth of the papillae of the tongue • Syn: ↑furry tongue, ↑black tongue • Hypernyms: ↑side effect …   Useful english dictionary

  • Hairy leukoplakia — Classification and external resources ICD 10 K13.3 ICD 9 528.6 …   Wikipedia

  • Tongue — The tongue is a strong muscle anchored to the floor of the mouth. It is covered by the lingual membrane which has special areas to detect tastes. The tongue is composed of muscles attached to the lower jaw and to the hyoid bone (a small, U shaped …   Medical dictionary

  • black tongue — noun a benign side effect of some antibiotics; dark overgrowth of the papillae of the tongue • Syn: ↑hairy tongue, ↑furry tongue • Hypernyms: ↑side effect …   Useful english dictionary

  • black tongue — 1. black hairy t. 2. niacin deficiency in dogs, which is accompanied by severe stomatitis and a dark colored tongue …   Medical dictionary

  • furry tongue — noun a benign side effect of some antibiotics; dark overgrowth of the papillae of the tongue • Syn: ↑hairy tongue, ↑black tongue • Hypernyms: ↑side effect …   Useful english dictionary

  • Asian black bear — Conservation status Vulnerable …   Wikipedia

  • anthracosis linguae — black hairy tongue …   Medical dictionary

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