Catatonia is a syndrome of motor dysregulation found in as many as 10% of acutely ill psychiatric inpatients. Treatments are well defined, and when used, catatonia has an excellent prognosis. This book, by two leading neuropsychiatrists, describes the features of catatonia, teaches the reader how to identify and treat the syndrome successfully, and describes its neurobiology. Patient vignettes from the authors' practices, and many from the classical literature, illustrate the principles of diagnosing and treating patients with catatonia. It is an essential clinical reference for psychiatrists and neurologists.