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Bell's Palsy (Detailed Overview)

Acute idiopathic peripheral facial nerve paralysis: comprehensive evaluation and treatment

Written by: Saygı Hospital Health Guide Editorial Board
Last updated:

This content has been compiled by the Saygı Hospital Health Guide Editorial Board and is periodically reviewed by a specialist physician.

References (5)

This content is for informational purposes only and does not constitute medical advice. You can book an appointment at our KBB (Kulak Burun Boğaz) department. Book Appointment →

What is Bell's Palsy (Detailed Overview)?

Bell's palsy is an idiopathic acute peripheral facial nerve paralysis with an annual incidence of 20-30 per 100,000. Reactivation of herpes simplex type 1 virus in the geniculate ganglion is the most accepted etiopathogenetic theory; resulting inflammation and edema lead to compression of the nerve as it traverses the bony fallopian canal.

Symptoms develop over 48-72 hours and reach maximal weakness in 1-2 weeks. House-Brackmann (HB) classification is used for severity grading. Approximately 70% of patients recover completely without treatment, but rates rise to 85-90% with appropriate steroid treatment.

It is critical to distinguish from central facial paralysis (forehead is preserved in central type) and to exclude Ramsay Hunt syndrome (vesicles, severe pain), tumor (gradual progression), and Lyme disease (bilateral, history of tick bite).

Symptoms

Sudden unilateral facial weakness (within 24-72 hours)
Forehead furrowing inability and incomplete eye closure
Drooping of the corner of the mouth and asymmetric smile
Loss of nasolabial fold
Hyperacusis (stapedial branch involvement)
Loss of taste in anterior two-thirds of tongue (chorda tympani)

Risk Factors

Pregnancy (especially third trimester and postpartum)
Diabetes mellitus
Hypertension and obesity
Cold/wind exposure
Upper respiratory tract infection
Family history (rare)

When to See a Doctor?

If you experience any of the following symptoms, seek medical attention promptly:

  • Sudden onset facial weakness (within 72 hours)
  • Inability to close the eye (corneal protection requirement)
  • Severe periauricular pain or vesicles (Ramsay Hunt suspicion)
  • Bilateral involvement
  • Slow progression over weeks (mass suspicion)

Treatment Methods

01
Oral prednisolone (60 mg/day for 5 days, then taper) within 72 hours
02
Antiviral (acyclovir/valacyclovir) in severe cases (HB IV-VI)
03
Eye care (lubricating drops, taping at night)
04
Facial muscle exercises and physical therapy
05
MRI/EMG (in atypical course or severe paralysis)
06
Surgical decompression (selected cases, controversial)

Which Department to Visit?

You can visit our KBB (Kulak Burun Boğaz) department for these complaints. Our specialist physicians will create the most suitable treatment plan for you.

Learn About KBB (Kulak Burun Boğaz) Department

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Health Disclaimer: The information on this page is prepared for general informational purposes only. It does not replace medical diagnosis and treatment. Please consult your physician for your complaints. Saygı Hospital does not accept responsibility for actions taken based on the information on this page.