01Apr 2022
Efficacy of topical steroids for the treatment of olfactory disorders caused by COVID‐19: A systematic review and meta‐analysis

Efficacy of topical steroids for the treatment of olfactory disorders caused by COVID‐19: A systematic review and meta‐analysis

To assess the effect of topical steroids on acute‐onset olfactory dysfunction in patients infected with COVID‐19. The improvement of olfactory score at 2 (standardized mean difference [SMD] = 0.7272, 95% confidence interval = [0.3851, 1.0692], p < 0.0001, I2 = 62.1%) and 4 weeks posttreatment (SMD = 1.0440 [0.6777, 1.4102], p < 0.0001, I2 = 61.2%) was statistically greater in the treatment than control group. However, there was no significant difference (odds ratio [OR] = 1.4345 [0.9525, 2.1604], p = 0.0842, I2 = 45.4%) in the incidence of fully recovery from anosmia/hyposmia between the treatment and control groups. Although this meta‐analysis found that topical steroids improved the acute onset olfactory dysfunction caused by COVID‐19, there was no difference in the rate of full olfactory recovery between treated and control patients.

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