Had numb fingertips for about 3 weeks constantly now on both hands. Is there anything you can do to improve this? Not sure of cause, came on after had funny turn where couldn't speak or move for 5 minutes. CT scan of brain was clear, mri ordered but as non urgent so could be few months and driving me nuts. Blood sugar fine, not cold, arm also affected. Husband thinks I need further tests but not sure they can do anything.