The text portion is intended as a practical reference manual, and is divided into three parts. The first part is an overview of the conditions and applications, general approach to chemodenervation and nerve block procedures, off- label indications, and injection pearls (what to do, what to avoid), followed by a review of the various agents (botulinum toxins, phenol, and alcohol) and their uses. The third part covers ultrasound basics for the clinician, including essential physics, machine settings, artifacts, scanning techniques, and pitfalls. The accompanying DVD is a visual atlas comprised of still images and cine-loops illustrating ultrasound anatomy, positioning, techniques for muscle localization, and procedures for performing all types of injections involving neurotoxins, peripheral nerve blocks, and motor point blocks.