AVA appear from the first VDZ infusion onward and disappear over time. The low prevalence of AVA suggests that immunogenicity does not influence response to treatment.

ObjectiveBell’s palsy is typically treated with oral corticosteroids (40–60 mg daily). Concomitant antivirals are currently not recommended. The objective of this systematic review and meta-analysis was to examine the effect of high-dose versus standard-dose corticosteroids, without antivirals, in the management of Bell’s palsy.Databases ReviewedEmbase, MEDLINE, PubMed, CINAHL, Cochrane Library.MethodsA systematic review and meta-analysis was performed according to PRISMA guidelines. Studies comparing high-dose (≥80 mg) or standard-dose (40–60 mg) corticosteroid therapy for Bell’s palsy were included. Exclusion criteria were coexisting antiviral treatment, nonoral drug delivery, and facial palsy due to other causes. Risk of bias was assessed using ROBINS-I. A weighted estimate of treatment effects across trials as odds ratios (OR) using a Mantel–Haenzel random-effects model was calculated.ResultsThree articles were included in the analysis, representing 485 patients. There was a significant decrease in nonrecovery with high-dose, compared with standard-dose, corticosteroids at 6 months follow-up (OR = 0.17, 95% confidence interval = 0.05–0.56, p = 0.004). Overall adverse events were 5.8% (n = 28), all reported in one study in the high-dose group (transient elevated liver enzymes and fecal occult blood).ConclusionsOur analysis shows a favorable effect of high-dose corticosteroid in the treatment of Bell’s palsy. It is the first to evaluate this effect without the use of antivirals in keeping with current treatment recommendations. As all included studies had a serious risk of bias, future research should focus on larger trials with more robust methodology. This will allow for more up-to-date and large-scale analyses where more valid conclusions can be drawn that may potentially influence treatment protocols.

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