Idalis is a 46 year-old female university teacher who presented to us a year ago with a 4-year history of persistent lower back pain and neurological symptoms in the legs. The symptoms came on during a period of high stress, initially in the form of isolated back pain, which over the last year before seeing us progressed to a pins and needles sensation in the legs and numbness in the foot, which she reported feeling much worse when wearing more restrictive clothing (yoga tigh