The efficacy of botulinum toxin type-A for intractable chronic migraine patients with no pain-free time.
Dominic AtraszkiewiczRieko ItoAnish BahraPublished in: British journal of pain (2021)
treatment is efficacious in intractable chronic migraine without pain-free time. The HIT-6 is a reliable and practical parameter to assess disability in this patient group. Use of such validated parameters should be considered with greater weight in future International Classification of Headache Disorders (ICHD) guidelines for controlled clinical trials.