Condition 101 About Facial Paralysis

What is the definition of Facial Paralysis?

Facial paralysis occurs when a person is no longer able to move some or all of the muscles on one or both sides of the face.

What are the alternative names for Facial Paralysis?

Paralysis of the face

What are the causes for Facial Paralysis?

Facial paralysis is almost always caused by:

  • Damage or swelling of the facial nerve, which carries signals from the brain to the muscles of the face
  • Damage to the area of the brain that sends signals to the muscles of the face

In people who are otherwise healthy, facial paralysis is often due to Bell palsy. This is a condition in which the facial nerve becomes inflamed.

Stroke may cause facial paralysis. With a stroke, other muscles on one side of the body may also be involved.

Facial paralysis that is due to a brain tumor usually develops slowly. Symptoms can include headaches, seizures, or hearing loss.

In newborns, facial paralysis may be caused by trauma during birth.

Other causes include:

  • Infection of the brain or surrounding tissues
  • Lyme disease
  • Sarcoidosis
  • Tumor that presses on the facial nerve


Follow your health care provider's instructions on how to take care of yourself at home. Take any medicines as directed.

If the eye cannot fully close, the cornea must be protected from drying out with prescription eye drops or gel.

When should I contact a medical professional for Facial Paralysis?

Call your provider if you have weakness or numbness in your face. Seek emergency medical help right away if you have these symptoms along with a severe headache, seizure, or blindness.


The provider will perform a physical exam and ask questions about your medical history and symptoms, including:

  • Are both sides of your face affected?
  • Have you recently been sick or injured?
  • What other symptoms do you have? For example, drooling, excessive tears from one eye, headaches, seizures, vision problems, weakness, or paralysis.

Tests that may be ordered include:

  • Blood tests, including blood sugar, CBC, (ESR), Lyme test
  • CT scan of the head
  • Electromyography
  • MRI of the head

Treatment depends on the cause. Follow your provider's treatment recommendations.

The provider may refer you to a physical, speech, or occupational therapist. If facial paralysis from Bell palsy lasts for more than 6 to 12 months, plastic surgery may be recommended to help the eye close and improve the appearance of the face.



Mattox DE. Clinical disorders of the facial nerve. In: Flint PW, Haughey BH, Lund V, et al, eds. Cummings Otolaryngology: Head and Neck Surgery. 6th ed. Philadelphia, PA: Elsevier Saunders; 2015:chap 170.

Meyers SL. Acute facial paralysis. In: Kellerman RD, Rakel DP, eds. Conn's Current Therapy 2019. Philadelphia, PA: Elsevier; 2019:671-672.

Shy ME. Peripheral neuropathies. In: Goldman L, Schafer AI, eds. Goldman-Cecil Medicine. 25th ed. Philadelphia, PA: Elsevier Saunders; 2016:chap 420.

Latest Advances On Facial Paralysis

  • Condition: Large Vestibular Schwannomas
  • Journal: Romanian journal of morphology and embryology = Revue roumaine de morphologie et embryologie
  • Treatment Used: Gross-Total vs. Near-Total Resection
  • Number of Patients: 66
  • Published —
This study reported experience with the surgical treatment of large vestibular schwannomas (benign tumors).
  • Condition: Bell’s Palsy
  • Journal: The Cochrane database of systematic reviews
  • Treatment Used: Surgery
  • Number of Patients: 65
  • Published —
The study researched the outcomes of early surgery in patients diagnosed with Bell’s palsy.

Clinical Trials For Facial Paralysis

Clinical Trial
  • Status: Not yet recruiting
  • Phase: N/A
  • Intervention Type: Device
  • Participants: 50
  • Start Date: January 18, 2021
A Randomized Cross-Over Clinical Trial Comparing Two Non-Surgical Treatments for Severe Blepharoptosis
Clinical Trial
  • Status: Recruiting
  • Participants: 1600
  • Start Date: January 4, 2021
Prediction of Patient-specific Outcomes After Interventional Neuroradiology Procedures