What is the recommended treatment for Bell's palsy?

Bell's Palsy Treatment

Prescribe oral corticosteroids (prednisolone 60 mg daily for 5 days, then taper over 5 days, OR prednisolone 50 mg daily for 10 days) within 72 hours of symptom onset for all patients 16 years and older with Bell's palsy. 1

Primary Treatment Algorithm

Adults (≥16 years)

Corticosteroids are mandatory - This is a strong recommendation based on high-quality RCTs showing 83% recovery at 3 months with steroids versus 63.6% with placebo (p<0.001), and 94.4% versus 81.6% at 9 months 1. The evidence demonstrates clear benefit in both recovery time and final functional outcomes.

Dosing regimens (choose one):

• Prednisolone 60 mg daily × 5 days, then taper over 5 days
• Prednisolone 50 mg daily × 10 days (25 mg twice daily)
• Prednisone 60 mg daily × 5 days with 5-day taper 1

Timing is critical: Initiate within 72 hours of symptom onset. Benefit after 72 hours is unclear 1.

Antiviral Therapy Decision

Do NOT use antivirals alone - This is strongly contraindicated as monotherapy provides no benefit over placebo 1.

Consider adding antivirals to steroids in these specific situations:

• Complete facial paralysis (severe disease) 1, 2
• Early presentation within 72 hours
• Ramsay-Hunt syndrome (herpes zoster involvement) 2

Antiviral options (if used with steroids):

• Valacyclovir 1 g three times daily × 7 days 3
• Acyclovir 400 mg five times daily × 10 days 3

The evidence for combination therapy is mixed - some smaller trials showed improvement (96.5% vs 89.7% recovery), but larger high-quality trials showed no significant benefit 1. The guideline rates this as an "option" rather than a recommendation, meaning equilibrium of benefit and harm 1.

Pediatric Patients (<16 years)

Steroids may be considered but are not mandatory - Children have spontaneous recovery rates up to 90%, higher than adults 1. No controlled trials support routine steroid use in children 1. If treating, use similar dosing adjusted for weight with significant caregiver involvement in decision-making 1.

Essential Supportive Care

Eye protection is mandatory for patients with impaired eye closure 1:

• Artificial tears during the day
• Lubricating ointment at night
• Eye taping or patching if needed
• Immediate ophthalmology referral if ocular symptoms develop

What NOT to Do

Avoid routine testing 1:

• No routine laboratory tests (unless Lyme disease endemic area - then check Lyme serology)
• No routine imaging at initial diagnosis
• No electrodiagnostic testing for incomplete paralysis

No recommendation for 1:

• Surgical decompression
• Acupuncture
• Physical therapy (though may consider in severe paralysis 3)

Follow-Up Requirements

Reassess or refer to facial nerve specialist if 1:

1. New or worsening neurologic findings at any point
2. Ocular symptoms developing at any point
3. Incomplete facial recovery at 3 months

Red flags requiring imaging (MRI with gadolinium of entire facial nerve course) 1:

• Recurrent paralysis on same side
• Isolated branch paralysis
• Other cranial nerve involvement
• Bilateral facial palsy
• History of trauma or tumor
• No recovery signs after 3 months

Common Pitfalls

The 72-hour window is real - While some recent data suggests flexibility 4, the strongest evidence supports early initiation. Don't delay treatment waiting for "confirmation" - Bell's palsy is a clinical diagnosis of exclusion.

Don't confuse "may offer" with "should offer" - The guideline language for antivirals is deliberately weak ("option" with "equilibrium of benefit and harm") 1. Steroids alone are the evidence-based standard.

Pregnancy considerations - Pregnant women have up to 90% spontaneous recovery rates 3. Steroids remain appropriate, but the risk-benefit discussion is particularly important given higher baseline recovery rates.

Severity matters for antiviral decisions - If considering combination therapy, reserve it for complete paralysis cases where some evidence suggests potential benefit 1, 2, 4.