Part-4 Cold or ice applied to your back can reduce inflammation and swelling by constricting blood vessels. The cold acts to slow nerve impulses, slows down the swelling process and acts to ease the pain. Change to heat after 48 hours or after the swelling has subsided This increases the blood flow to recovering tissue and relaxes the muscles. Symptom continue for six to eight weeks - or even longer. Symptoms will re-occur with most forms of lower back pain . Consult your physiotherapists to fully assess your back and show you how to prevent future episodes. This will include a combination of treatment as well as home exercise program that will strengthen your weak spine. Symptoms such as weakness, numbness, or tingling in one or both legs, or symptoms including abdominal pain or bowel and bladder problems, should be reported to your physician.