Study on the Optimal Waveform Patterns of Electroacupuncture Targeted Intervention for Bell's Palsy Based on Surface Electromyography Characteristics

The goal of this clinical study is to find out whether different electronic acupuncturewave forms can effectively treat recovery‐stage Bell's palsy in adults and evaluate theirsafety.The main questions it aims to answer are: ‐ Can targeted electronic acupuncture wave forms improve facial nerve function inpatients with Bell's palsy? ‐ What is the optimal electronic acupuncture waveform for different degrees of facialnerve injury? ‐ What adverse events may occur during electronic acupuncture treatment? Researcherswill compare low‐frequency continuous wave electronic acupuncture and intermittentwave electronic acupuncture to determine which waveform works better forrecovery‐stage Bell's palsy.Participants will: ‐ Receive either low‐frequency continuous wave electronic acupuncture or intermittentwave electronic acupuncture every other day for 4 weeks ‐ Undergo surface sEMG and ENoG examinations at baseline, Week 2, and Week 4 ‐ Complete facial function assessments and safety evaluations at each clinic visit