Botulinum toxin is an exciting therapy that is applicable to a wide variety of disorders in many fields of medicine. Because botulinum toxins must be injected locally, physicians must possess the appropriate expertise in order to deliver the therapy effectively. Occasionally, unique approaches to muscles are required, which may differ from those used by electromyographers. Additionally, many physicians are not accustomed to giving injection therapy. A simple anatomical atlas or even an atlas for electromyography will not be helpful in all circumstances – hence the need for this book. We have assembled a team of international experts in the use of botulinum toxin to give guidance on exactly how to administer the injections. The emphasis in this book is on technique, and it is profusely illustrated for maximal advantage. The book can be read as a teaching aid, but may also be useful at the bedside for immediate guidance. We are grateful to the contributors of this book and trust that physicians who employ this therapy in their practices will find it valuable.

Our special thanks to the Parkinson's and Movement Disorders Foundation, which provided a grant for the graphics in this book, Anne Kenton and Laura Wood from Cambridge University Press for their tireless assistance during the preparation, and Mary Ann Chapman for her many suggestions and encouragement. We are also blessed by having a talented and patient neurologist and artist, Dr Mayank Pathak, who drew all the original anatomical illustrations.