What is the recommended treatment for Bell palsy?

Treatment for Bell Palsy

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

Core Treatment Algorithm

Adults (≥16 years)

Steroids (MANDATORY):

• Start within 72 hours of symptom onset
• Prednisolone 60 mg daily × 5 days, then taper over 5 days, OR
• Prednisolone 50 mg daily × 10 days (alternative regimen)
• Evidence shows 83% recovery at 3 months with steroids vs 63.6% with placebo (p<0.001), and 94.4% vs 81.6% at 9 months 1

Antivirals (OPTIONAL - Consider for severe cases):

• May add valacyclovir 1g three times daily × 7 days OR acyclovir 400 mg five times daily × 10 days 1, 2
• Add to steroids, NOT as monotherapy
• Never use antivirals alone - they are ineffective without steroids 1
• Consider combination therapy primarily in patients with complete facial paralysis 1

Children (<16 years)

• Evidence for steroid benefit is inconclusive in children 1
• Children have higher spontaneous recovery rates (up to 90%) than adults 2
• May consider oral steroids with caregiver involvement in decision-making, given favorable benefit-harm ratio 1

Essential Eye Protection

Implement immediately for all patients with impaired eye closure: 1, 3

• Artificial tears during the day
• Lubricating ointment at night
• Eye taping or patching if needed
• This prevents corneal injury from exposure keratopathy

What NOT to Do

• Do NOT obtain routine laboratory testing 3 - only test if Lyme disease is endemic in your area or if atypical features suggest alternative diagnosis
• Do NOT perform routine imaging 1 - imaging is costly and exposes patients to radiation without benefit in typical Bell's palsy
• Do NOT perform electrodiagnostic testing in patients with incomplete paralysis 3

When to Reassess or Refer

Refer to facial nerve specialist if: 1, 3

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

Red flags requiring imaging (MRI with contrast): 1

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

Critical Timing Considerations

The 72-hour window is crucial but not absolute. Recent evidence suggests steroid monotherapy initiated within 72 hours shows the highest recovery rates (OR 2.36) 4. However, treatment beyond 72 hours may still provide benefit - one study showed 85.69% recovery when treatment started after 72 hours vs 76.92% within 72 hours 4. The key is to start treatment as soon as possible, but don't withhold steroids if the patient presents slightly after 72 hours.

Special Populations

Pregnant women: Have higher spontaneous recovery rates (up to 90%) 2. Steroids remain appropriate but discuss risks/benefits. Pregnancy itself increases Bell's palsy risk, particularly with obesity, multiple pregnancy, gestational diabetes, or preeclampsia 5.

Severe paralysis: Patients with complete facial paralysis may benefit more from combination steroid-antiviral therapy when initiated within 72 hours 4. Consider electrodiagnostic testing in this subgroup 3.

Common Pitfalls to Avoid

• Prescribing antivirals alone - this is ineffective and wastes resources 1
• Delaying steroid initiation while waiting for test results - start treatment based on clinical diagnosis
• Missing alternative diagnoses - ensure rapid onset (<72 hours), unilateral involvement, no other neurologic deficits
• Inadequate eye protection counseling - this prevents the most serious acute complication
• Failing to arrange 3-month follow-up - incomplete recovery warrants specialist referral and imaging