Bell's Palsy Management
For adults and adolescents ≥16 years with new-onset Bell's palsy, prescribe oral corticosteroids within 72 hours of symptom onset—this is the single most important intervention that significantly improves facial nerve recovery. 11
Pharmacologic Treatment
Corticosteroids (Mandatory)
- Initiate within 72 hours of symptom onset for maximum benefit
- Dosing regimens (either is acceptable):
- Evidence: High-quality RCTs demonstrate 83% recovery at 3 months with steroids vs 63.6% with placebo (P<.001), and 94.4% vs 81.6% recovery at 9 months 1
- Treatment after 72 hours has unclear benefit 1
Antiviral Therapy (Optional)
- Do NOT use antivirals alone—they are no better than placebo 11
- May offer antivirals (valacyclovir or acyclovir) in addition to steroids within 72 hours, particularly for:
- Evidence shows equilibrium of benefit and harm; large trials failed to prove significant benefit, though a small effect cannot be excluded 1
Pediatric Considerations
- Evidence for steroids in children is lacking—no controlled trials exist 11
- Children have higher spontaneous recovery rates than adults
- May consider steroids with significant caregiver involvement in decision-making, given similar disease process to adults 1
Eye Protection (Mandatory)
Implement aggressive eye care immediately for any patient with incomplete eye closure to prevent corneal abrasions, exposure keratitis, and ulcerations 11
- Daytime: Frequent lubricating drops
- Nighttime: Ophthalmic ointments (provide longer protection but blur vision)
- Additional measures: Eye taping/patching at night, moisture chambers, sunglasses
- Monitor for: Burning, itching, irritation, vision changes, pain 1
- Consider botulinum toxin or surgical options for persistent lagophthalmos 1
Diagnostic Approach
What TO Do:
- History and physical examination to exclude other causes:
- Confirm rapid onset <72 hours and unilateral presentation 11
What NOT To Do:
- Do NOT order routine laboratory tests 1
- Do NOT perform routine imaging (CT/MRI) unless atypical features present 1
- Do NOT perform electrodiagnostic testing (EMG/ENoG) in incomplete paralysis 11
- May offer electrodiagnostic testing only in complete paralysis for prognostic information 1
Common Pitfall: Recent data shows imaging use increased from 32.9% to 41.0% after guideline publication despite being explicitly discouraged—this represents unnecessary cost and radiation exposure 2
Follow-Up and Referral
Reassess or refer to facial nerve specialist if: 1
- New or worsening neurologic findings at any point (suggests alternative diagnosis)
- Ocular symptoms develop at any point (risk of corneal damage)
- Incomplete facial recovery at 3 months (may need advanced interventions)
Treatment Adherence Reality
Real-world data reveals significant gaps: only 51.9% of patients receive guideline-recommended steroid therapy 3, and only 33.8% receive steroids within the critical 72-hour window 2. Emergency medicine clinicians show better adherence than other specialties 4. The key message: early recognition and immediate steroid initiation within 72 hours is critical and often missed.
Treatments Without Recommendation
No recommendation can be made for: 11
- Surgical decompression
- Acupuncture
- Physical therapy
- Electrotherapy
These lack well-designed studies and high-quality evidence 56
Special Populations
- Diabetes: Consider screening for diabetes in Bell's palsy patients, as diabetes (aOR 1.63) and diabetic complications are independently associated with Bell's palsy 7
- Pregnancy: Treat on individualized basis; higher risk population 8
- Contraindications to steroids: Diabetes, morbid obesity, previous steroid intolerance require individualized assessment 1