Acupuncture for Residual Dizziness After Successful Repositioning Maneuvers in Patients with Benign Paroxysmal Positional Vertigo: Study Protocol for a Randomized Noninferiority Trial

Benign paroxysmal positional vertigo (BPPV) is the most common cause of peripheral vertigo among adults. Successful treatment often requires an appropriate canalith repositioning procedure (CRP), which has proven effective in the treatment of BPPV. However, some patients experience residual dizziness (RD) after CRP, affecting their daily activities and quality of life. Although oral betahistine is a common clinical treatment for RD, some patients may discontinue this medication due to adverse effects. Conversely, acupuncture has demonstrated efficacy in treating dizziness with minimal adverse effects. However, to date, no trials have directly compared the efficacy of acupuncture and betahistine in treating RD. Our goal was to assess the noninferiority of acupuncture in treating RD compared with the commonly used oral betahistine treatment.