Close to 80% of people will experience back pain at some point in their lives.  There are times, though, when you should not seek your own remedies and see your doctor right away.  These include:  1.  Back pain that comes on suddenly and for no apparent reason.  2.  Back pain accompanied by other symptoms, such as fever, stomach cramps, chest pain or difficulty breathing.  3.  An acute attack that last for more than two or three days without any pain relief.  4.  Chronic pain that lasts more than two weeks without relief.   The BackTRAX can prevent, reduce or eliminate most back pain and sciatica.  But please, see your physician right away if you experience any of the above symptoms as you could be experiencing other medical issues.