A key finding of a new study explains how injecting onabotulinumtoxinA (BoNT-A) into the scalp can prevent or reverse mechanical sensitization of meningeal nociceptors in migraine.

Researchers found that BoNT-A inhibits the suture branches of intracranial pain fibers when administered extracranially because these fibers have processes that protrude through the sutures in the calvaria. Read the full article