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Tongue weakness (hypoglossal nerve palsy)

Also called: Hypoglossal nerve palsy, tongue weakness

Weakness of the tongue on one side, causing slurred speech and trouble moving food. The tongue points toward the weak side.

CheckImaging for a cause

Overview

Causes include strokes, tumors, neck artery tears, and surgery.

Symptoms

Common signs:

  • Tongue weakness or slurred speech
  • Trouble swallowing or speech slowly changing

Less common

  • Trouble swallowing

When to get medical care

Call 911Sudden face drooping, arm weakness, trouble speaking, or vision loss: call 911.
Get care todayNew tongue weakness.
See a doctor soonSymptoms that last or keep coming back.

Causes

Nerve damage.

Does it spread or run in families?

  • It isn't contagious. You can't catch it from someone else.

Who is more likely to get it

  • People after neck surgery or neck radiation: Higher risk

Possible complications

Diagnosis

A clinician asks about your symptoms and may order tests.

The exam

A physical exam.

Tests

Tests, if needed:

  • MRI:

Treatment

Treatment depends on the cause and how severe it is.

Self-care

  • Speech therapy
  • Eat soft foods
  • Do speech therapy

Which doctor treats this

  • Start with your primary care provider (family doctor or internist).
  • They may send you to a neurologist (brain and nerve doctor).

Living with it

Support groups and helplines

Children, pregnancy, and older adults

  • Adults: Needs a scan to find the cause.
  • Older adults: Higher risk.

Pregnancy and breastfeeding

  • If you're pregnant or planning to be, tell your prenatal provider about this condition.
  • Don't start or stop any medicine on your own. Some are safe in pregnancy and some need to be changed.
  • Ask before taking any pain reliever. The FDA advises avoiding ibuprofen and naproxen after 20 weeks unless your doctor says to.
  • Breastfeeding: Most medicines are fine, but ask. The NIH LactMed database lists what's known about each one.

Outlook

Depends on the cause.

Some recover over months.

Getting ready for your visit

Bring a list of your symptoms and medicines.

What to bring

  • A list of your medicines and supplements
  • Notes on when symptoms started and what makes them better or worse

Questions to ask

  • What's causing this?
  • What treatment do you recommend?

Research studies

Research studies test new ways to find and treat health problems. Some are looking for volunteers. Talk with your doctor before joining one.

Search ClinicalTrials.gov for studies on Tongue weakness (hypoglossal nerve palsy)

Sources

Last updated 2026-11-12.