I am 25 year old female and have given up sugar two weeks ago. Last week I started experiencing pain in my middle to upper back which then radiates to my abdomen and then up to the area where my ribs meet.  The pain starts in the evening and is very strong - it keeps me awake all night.  Today I ate very little food and so far I am feeling ok.
Hi, Pain which you described looks like neuropathic pain. It seems that you are on strict diet. I advise you to take supplement of vitamins as you have reduced your diet you must be having vitamin deficiency. Take tablets of Multivitamin (Becomes or European forte for twice daily). If pain doesn't subside after 4-5 days then consult orthopedic to rule out any other cause of such symptoms.