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.
Sciatica is a nerve pain caused by compression or inflammation of a nerve in the lower back or buttock region. Pain is usually quite sharp in the buttock area and often runs down the leg all the way to the foot. The pain increases when tension is placed on the sciatic nerve.