michaelm
you should talk to your physician about having a nerve conduction velosity test-or at least an assessment of your reflexes- you stated in your message that all blood work is normal- however, muscular atrophy and weakness can be caused by other things other that will not be apparent in a blood work-up most commonly would be a form of Charcot-Marie-Tooth syndrom that affects nerve conduction and results in muscular atrophy and weakness best of luck mm