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 when you have pain, weakness or tingling that radiates down your leg. It is usually caused by disc problems in your spinal column but can also be caused by other problems. The pain involved in sciatica can vary from a mild tingling to severe, disabling pain. It usually occurs on one side.