David D. Clarke, MD is President of the Psychophysiologic Disorders Association. He is also Assistant Director at the Center for Ethics and Clinical Assistant Professor of Gastroenterology Emeritus both at Oregon Health & Science University (OHSU) in Portland, Oregon, USA. Since 1982 he has diagnosed and treated over 7000 patients whose symptoms were not explained by diagnostic testing. As Faculty Associate at Arizona State University and at the Cummings Graduate Institute for Behavioral Health Studies he teaches graduate courses on Psychophysiologic Medicine. His book for patients, They Can’t Find Anything Wrong!,(Sentient Publications, 2007) was praised by a president of the American Psychosomatic Society as “truly remarkable.” Dr. Clarke has lectured extensively on Psychophysiologic Disorders to health care professionals and the public across North America and in Europe. He has appeared on over 100 television and radio broadcasts throughout the U.S. The website of his non-profit is EndChronicPain.org