Quantitative Sensory Testing in Chronic Pain Patients Undergoing Opioid Treatment and Opioid Tapering

Inclusion Criteria: * Patient age between 18 and 75 * History of chronic pain for at least 3 months * Patients may have been selected for opioid taper by their pain physicians. * Patients may or may not be on opioid therapy. * They must have the ability to understand the protocol and provide voluntary, written, informed consent. Exclusion Criteria: * Cancer pain * Unstable medical conditions (including but not limited to history of myocardial infarction within the past year, autoimmune diseases, uncontrolled diabetes with hemoglobin A1C of greater than 10) * Pregnancy * Inability to adequately answer surveys * History of substance abuse within 5 years * Surgery within the past month * Surgery planned during the next six months * Use of systemic steroids.