I am with Shiney Sue here. It was my Neurologist that did the battery of tests but it was my PM that worked in conjunction with her and myself to sort out other issues since I have spinal disorders. But since they are saying diabetes I think my next step would be with an Endocrinologist (Diabetes). I am just saying that PM's can REALLY help you to sort things out and can help manage the pain. Neurologists can too. But in my experience it has been my PM that was my savior. He did NOT like the "idiopathic" diagnosis of small fiber PN. Especially after EVERYTHING came back negative. So, he really sat down with me and went through everything. Since then my Neurologist has changed that diagnosis to Central Pain Syndrome. Now, that, he is in agreement with based on spinal issues and severe ongoing pain PRIOR to any surgeries. It makes more sense to me as well. I'll just say for now he detests anything that comes back as idiopathic or a wastebasket diagnosis of Fibromyalgia (his words). As he says...pain happens for a REASON. And if diabetes is the issue, then I would definitely find a Specialist for that.