Effects of Photobiomodulation and Electrical Stimulation Among Bell's Palsy Patients

Despite promising evidence supporting both photobiomodulation (PBM) and electrical stimulation (ES) in Bell's palsy rehabilitation, key gaps remain in the literature. Few studies have directly compared these modalities under standardized conditions, especially while keeping facial exercises constant across groups. Inconsistent treatment parameters such as variations in PBM wavelength or ES intensity limit the comparability and replication of existing findings. Additionally, many studies rely on subjective outcome measures and lack structured timelines for assessing facial symmetry, neuromuscular coordination, or long-term recovery, including complications like synkinesis. These limitations highlight the need for a well-controlled comparative study to determine the more effective modality when paired with consistent facial rehabilitation exercises.

NCT Number	NCT07266636
Lead Sponsor	Lahore University of Biological and Applied Sciences
Conditions	Bell's Palsy
Enrollment	34 participants
Start Date	2025-11-25
Primary Completion	2026-05-25 (estimated)
Study Completion	2026-05-25 (estimated)
Updated on ClinicalTrials.gov	2025-12-05