Although diabetic thoracic radiculopathy (also called thoracoabdominal or truncal neuropathy) is now a well-recognized form of diabetic neuropathy, abdominal pain caused by diabetic thoracic radiculopathy is uncommon. We report a case of diabetic thoracic radiculopathy who had extensive gastrointestinal studies because of the upper abdominal pain as an unusual presenting symptom. EMG findings and the therapeutic response are also discussed.