Reduction of spaces of intervertebral disc joints, arthritis of spine joints, compression of nerves and in turn pain, spasm, irritation in the area where nerves supply, is probably what causes you such symptoms. It is imperative to know the cause. Management and treatment of any joint involvement is similar. To know the cause x Ray of AP and Lateral view of spine ( of concerned area such as lumbar, sacral etc) is sufficient. Treatment part is antiinflammatory and analgesics, physiotherapy, Yoga, deep breathing etc are important. Avoidable are lifting weight, bending, exertion etc. Even if safe herbals are used to strengthen spine muscles to keep the gap, x Ray report is necessary for assessment. Hope it helps.