Beyond Steroids: How Adding Jaw Exercises and PNF Therapy Transforms Recovery in Bell's Palsy Patients – A Randomized Controlled Trial

Background: Bell's palsy is an acute idiopathic peripheral facial paralysis affecting 20–30 per 100,000 individuals annually. Although most patients recover spontaneously, up to one-third develop synkinesis, including involuntary facial movements that impair symmetry, function, and quality of life. The role of physical therapy as an adjunct to standard corticosteroid-based care remains incompletely defined.Objectives: This randomized controlled trial evaluated whether a structured physical therapy program combining proprioceptive neuromuscular facilitation (PNF), mirror therapy, and progressive jaw exercises enhances recovery beyond corticosteroid treatment alone in patients with acute Bell's palsy.Methods: Sixty patients presenting within 72 hours of onset were randomized into two equal groups. The control group (n = 30) received standard care (prednisolone ± acyclovir). The experimental group (n = 30) received identical medication plus a 12-week physical therapy program comprising PNF, mirror therapy, and progressive jaw exercises. Outcomes were assessed at baseline, 4, 12 weeks, and 6 months using the House–Brackmann scale, Facial Disability Index (FDI), SF-12, Synkinesis Assessment Questionnaire (SAQ), and Edinburgh Depression Scale.Results: At 6 months, 87% of the therapy group achieved normal function (House–Brackmann grade I) versus 70% of controls (p = 0.04). Clinically significant synkinesis occurred in 7% of the therapy group compared with 23% (p = 0.03; OR = 0.24). The therapy group showed higher FDI scores (11–12 points; p < 0.001), superior SF-12 physical (53.2 vs. 47.8; p < 0.001) and mental (52.8 vs. 46.2; p = 0.001) component scores, and lower depression scores (5.2 vs. 8.4; p = 0.002).Conclusion: Integrating PNF, mirror therapy, and progressive jaw exercises into a structured rehabilitation program significantly improves functional recovery, reduces synkinesis risk by approximately 75%, and enhances quality of life in Bell's palsy patients. This approach should be considered a standard component of multidisciplinary care.