by Joseph Jankovic, MD, Alberto Esquenazi, MD, Darcy Fehlings, MD, Fred Freitag, DO, Amy M. Lang, MD, Marcus Naumann, MD. Parkinson’s Disease Center and Movement Disorders Clinic, Department of Neurology, Baylor College of Medicine, Houston, TX, USA. This review systematically examines the effects of botulinum toxin type A (BTX-A) on patient-reported outcomes across disorders using [...]