This book is a practical "how-to" guide for the physician wanting to learn neural therapy. It begins with a review of some basic neurophysiology. Straightforward neurophysiological principles are than applied to show that the underlying cause of many common medical problems is local dysfunction of the autonomic nervous system. Examples of illnesses that fall in this category include migraine, asthma, irritable bowel syndrome, dysmennorhea, and many myofascial pain syndromes. The author then shows that these conditions are triggered by interference fields (or foci of electrophysiological instability). Stereotypical examples of interference fields are surgical scars, but other common locations are teeth, somatic dysfunction, autonomic ganglia, viscera or nerve entrapments. Finding interference fields is an art, and methods of detecting them (including autonomic response testing) are demonstrated. Treatment is simple and usually involves injections of dilute procaine. When response to treatment is disappointing or relief of symptoms is short lived, systemic factors from abnormal biochemistry or psychogenic factors are the usual causes. Practical information is provided on how to identify and treat these common impedements to successful neural therapy. The final chapter offers a medical paradigm showing that neural therapy can be easily integrated into mainstream medical practice.