The schemas are a set of 'types', each associated with a set of properties. The types are arranged in a hierarchy.he schemas are a set of 'types', each associated with a set of properties. The types are arranged in a hierarchy.
Inadequate stretching and warming up prior to exercise, or advancing your exercise program too quickly, or beginning a new exercise program, have all been known to cause symptoms. In some people, just vigorous walking or exercising on uneven ground is enough to exacerbate a flare-up of sciatica nerve pain.
Although some of us are familiar with a pinched nerve which is associated with sciatic-like pain in the leg, irritation or inflammation of nerves in the low back region can also cause a sensation in the upper leg or hip region. It is important to realize there are many things that can go wrong in the spine.