Mayo Clinic Guide to Pain Relief provides reliable, practical information on managing chronic pain. Much of the information comes directly from the experience of pain specialists and other health care professionals at Mayo Clinic. This book supplements the advice of your physician, whom you should consult for individual medical problems. Mayo Clinic Guide to Pain Relief does not endorse any company or product. Mayo, Mayo Clinic, Mayo Clinic Health Solutions, and the mayo triple-shield logo are marks of Mayo Foundation for Medical Education and Research.