This symposium-based volume in the successful Advances in Neurology Series builds on current knowledge in the treatment of dystonia u a disorder impairing voluntary movement of the extremities. Rapid advances in treatment since publication of Dr. Fahn's Volume 78 of the series emphasize the need for newly updated material. FEATURES: Includes The latest therapies (both surgical treatments and the use of botulin toxin) New material on our current understanding of genetic factors and their role in the disease Authoritative coverage from leaders in the field.