OnabotulinumtoxinA for the Treatment of New Daily Persistent Headache: an Open Label Study

155 units of OnabotulinumtoxinA, will be injected into 31 sites in the head and neck every 12 weeks for a total of 24 weeks using a sterile 30-gauge, 0.5 inch needle as 0.1 mL (5 Units) injections per each site. Injections will be divided across seven specific head/neck muscle areas (corrugator, procerus, frontalis, temporalis, suboccipital, splenius capitus and medial/lateral occipital, and trapezius).