What are some of the causes of small fiber neuropathy, can the degeneration in my cervical spine becauseing it were I have all these strange symptoms neurological symptoms? I know I've had so many tests already from diabetes test and test looking for cancer and MRIs at the brain so much blood work up and everything's come back normal but I've had a lot of issues with pins and needles in my extremities and sharp stabbing pains in my feet and sometimes numbness in my extremities specifically my lower legs by calves my feet sometimes one side of my face will feel numb one part of my index finger on my right hand will feel numb but then I'll get the sensory overload sensation where it's almost like an adrenaline rush but they've checked my adrenal glands they've checked my blood work up for metanephrines and nor metinephrines and everything's been normal.