Botulinum toxin effective in treating isolated or essential head tremor
1. In this randomized controlled trial, botulinum toxin was more effective than placebo in treating isolated or essential head tremor at 18 weeks follow-up. 2. Adverse events occurred more frequently in the botulinum toxin group including head and neck pain, posterior cervical weakness, and dysphagia. Evidence Rating Level: 1 (Excellent) Study Rundown: Essential tremor is