I am new to the group because I need answers. A couple years ago I lost feeling in my left foot up to my knee. I had numerous tests done with an EMG and an autonomic reflex test showing abnormal results. i was diagnosed with idiopathic small fiber neuropathy. Since then, the nerve damage has gone into my right leg and foot, arms, and hands. Everything will either be numb completely, pins/needles, achy, sharp pains, electric feeling, itchy, and sensitive to the touch. Over the past week and a half however, I have had bad chest pains where it is difficult to breathe. I went to the ER and had an EKG done. They found that my heart rate is low and my breathing is slow. Is this pain related to SFN?