Bell palsy

Friday, May 01, 2026

🔬 Practice-Changing Findings
Evidence from RCTs and meta-analyses published in the last 12 months.

1. Corticosteroids and antiviral treatment for Bell's palsy (idiopathic facial paralysis).

The Cochrane Database of Systematic Reviews (2026) - Systematic Review Protocol

Key Findings

No efficacy or safety results are reported yet; this 2026 Cochrane protocol frames the key steroid vs antiviral vs combination comparisons for acute Bell's palsy.
Potential age-related differences in treatment benefit are prespecified, underscoring concern that improvement or harm may vary across subgroups.

📋 Practice Implication: Continue to base initial treatment on existing evidence and guidelines; this protocol signals that a more definitive comparative update on steroids, antivirals, and subgroup effects is still pending.

2. Acyclovir efficacy for bell's palsy treatment.

American Journal of Otolaryngology (2025) - Randomized Controlled Trial

Key Findings

Improvement on the House-Brackmann scale was 86.6% with acyclovir plus prednisolone versus 90% with prednisolone alone, with no statistically significant difference.
Sequelae occurred in 23.3% of the combination group versus 27.27% of the steroid-only group, again without a statistically significant difference.

📋 Practice Implication: For uncomplicated Bell's palsy, routine addition of acyclovir to steroids is hard to justify when recovery and sequelae were similar.

3. Nationwide Analysis of Head and Neck Imaging for Bell's Palsy: Insights From Healthcare Claims.

The Laryngoscope (2025) - Retrospective Cohort Study

Key Findings

CT was performed in 27% of patients and MRI in 25%, with median times of 3 days and 36 days after diagnosis.
Within 30 days, early CT was associated with combination therapy (OR 3.49, 95% CI 3.28-3.73), and early MRI use was also increased (OR 1.26, 95% CI 1.17-1.35).

📋 Practice Implication: Typical Bell's palsy presentations should not trigger reflex CT or MRI ordering; reserve imaging for atypical features or alternative diagnoses.

4. Guidelines for diagnosis and treatment in neurology - Lyme neuroborreliosis.

German Medical Science (2025) - Practice Guideline

Key Findings

Class Ia evidence showed a 14-day antibiotic course was sufficient for early neuroborreliosis, with no demonstrated improvement from longer therapy.
Steroids are not advised with antibiotics for probable or confirmed Lyme facial palsy, and PTLDS outcomes including quality of life, fatigue, depression, and cognition did not improve with antibiotics.

📋 Practice Implication: In Lyme-endemic settings, facial palsy should prompt diagnostic consideration of neuroborreliosis because management shifts toward antibiotics and away from adjunct steroids.

5. Demographic and Clinical Features of Pediatric Bell's Palsy: A 26-Year Experience at a Tertiary Care Hospital in Riyadh.

Cureus (2025) - Retrospective Cohort Study

Key Findings

Among 301 children, 94% had no complications, only 0.67% did not achieve full recovery, and bilateral Bell's palsy occurred in 0.33%.
Recurrence occurred in about 20% of patients, while oral prednisolone was used in 81% and eye care measures in 72%.

📋 Practice Implication: Families of children with Bell's palsy can usually be counseled toward a favorable prognosis, while still discussing recurrence risk and the need for eye protection.

💡 Summary

Recent Bell palsy evidence still supports corticosteroids as the main acute therapy, while one randomized trial found no added recovery benefit from acyclovir plus prednisolone over prednisolone alone. Claims data also suggest substantial imaging overuse in routine Bell palsy care, and Lyme facial palsy remains an important alternative diagnosis because early neuroborreliosis responds to a 14-day antibiotic course without adjunct steroids. The high-significance research pool was sparse for this topic, so lower-scoring fallback studies were used to complete five findings and future searches may need broader terms.