Pain in Patients with Post Paralytic Hemifacial Spasm: Before, during and after Botulinum Toxin Injections.

Unlabelled: It is well-established that botulinum toxin (BT) injections improve quality of life in patients with postparalytic hemifacial spasm. Nevertheless, injection-related pain and contracture-related pain have not yet been studied. The primary objective of our study was to evaluate injection-related pain in patients with facial palsy sequelae, and to compare the standard technique (syringe) with the Juvapen device.