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Tongue Nerve Injury: Symptoms, Causes, and Recovery

What Happens When You Bite a Tongue Nerve?

The tongue is richly innervated (lingual nerve – V3; chorda tympani – VII; glossopharyngeal – IX; hypoglossal – XII). Trauma can cause temporary or permanent sensory/motor deficits.

Common Cause

Accidental biting while eating, talking, or during seizure. Intentional self-harm also occurs.

Symptoms

  • Numbness/tingling (paresthesia) in part of tongue.
  • Altered taste (dysgeusia/ageusia) – chorda tympani.
  • Pain (neuropathic: burning, shooting).
  • Speech/swallowing difficulty (motor involvement).

Immediate Self-Care

  • Rinse with warm salt water.
  • Cold compress externally.
  • OTC analgesics (ibuprofen, acetaminophen).
  • Avoid hot/spicy/acidic foods.
  • Soft diet.

Recovery Timeline

  • Mild (neurapraxia): Days to weeks.
  • Moderate (axonotmesis): Weeks to months.
  • Severe (neurotmesis): May require microsurgical repair; incomplete recovery possible.

When to See a Doctor

    li>Symptoms persist >2 weeks.
  • Worsening pain, spreading numbness.
  • Difficulty speaking/swallowing.
  • Signs of infection.

Prevention

Chew slowly; treat seizures; address bruxism; mouthguards for sports.

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