 Less common causes of radiculopathy include injury caused by tumor (which can compress nerve roots locally) and diabetes (which can effectively cause ischemia or lack of blood flow to nerves).Radiculopathy is a diagnosis commonly made by physicians in primary care specialities, orthopedics, physiatry, and neurology.The diagnosis may be suggested by symptoms of pain, numbness, and weakness in a pattern consistent with the distribution of a particular nerve root, such as sciatica.