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Signs and symptoms of black hairy tongue include:

  • Black discoloration of the tongue, although the color may be brown, tan, green, yellow or white
  • A hairy or furry appearance of the tongue
  • Altered taste or metallic taste in mouth
  • Bad breath (halitosis)
  • Gagging or tickling sensation, if the overgrowth of the papillae is excessive

When to see a doctor

Though unattractive, black hairy tongue is usually a temporary, harmless condition.

See your doctor if:

  • You're concerned about the appearance of your tongue
  • Black hairy tongue persists despite brushing your teeth and tongue twice daily
May. 16, 2014

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