i am getting pain at any part of my back(at small portion), if i try to find it where it is(it feels like the pain is shifting to other place). i have observed the area where the pain is,i observed that there is no injury or any kind of scratch but still i got pain(like scratch pain). the problem automatically dissapears after some days, it reoccur at other place after few months. the pain is not always at back, sometime it appears at hand or stomach the pain is not like ordinary pain, it is just like scratch