<s>[INST] Hi, I am looking for an answer to why my fathers left arm has lost strength he had a recent mri that showed everything normal but the power he had not to long ago is no longer there. any possible conditions that may be causing this? he is 46 and a diabetic [/INST] Hi, A little more history would have been appreciated. Well, you mentioned your father is 46, and he is losing strength in the arms. I feel if we know that the diabetes level is under control or poor control. MRI of what region is done is missing from history. Any signs of pain or other things need to be checked out. If any nerve entrapment is present in the cervical region than chances of losing strength is but obvious due to pain. Trying the exercise in a slow and progressive manner for upper limb should help ease the symptoms. If you provide more details I will be definitely able to provide more insights into the case. Hope I have answered your query. Let me know if I can assist you further. Jay In Chat Doctor.  </s>