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To evaluate the efficacy of topical chamomile oil in patients with mild and moderate carpal tunnel syndrome (CTS).

Eighty six patients with electrodiagnostic criteria of mild and moderate CTS were enrolled in this randomized double-blind placebo-controlled clinical trial and received wrist splint plus topical chamomile oil or placebo for 4 weeks. They were evaluated at the baseline and end of the study regarding functional and symptomatic scores, dynamometry, and electrodiagnostic indexes.

Dynamometry, functionality, and symptom severity scores of the patients were significantly improved in the chamomile oil group compared with the placebo group (P = 0.040, P = 0.0001, P = 0.017, respectively). Additionally, compound latency of the median nerve in the chamomile oil group significantly decreased (P = 0.035) compared to the placebo group. Other electerodiagnostic measurements did not …