hi, i just sprain my back, it just happened at random, now when i bend my back, or make a slight turn sideway, i get a shocking like feeling on back, its not painful, it wont happen always, just like once everynow and then. i dont knw how to explain the feelin, it similar to the feeling when u touch a hot object, and u pull ur hands back due to reflects action. its kind of like that with my back, just feeling like that!! so when i bend or turn sideways, i get this feeling and go back to normal position right away!!