I have had burning feet fir around 18 months. I had blood tests done and Dr said all fine and might be something I just gave to live with. I asked for other tests to be done. Diabetes bloods came back fine and I think I would have had other symptoms by now. Went to a neurologist, he said my large nerve fibres were like those if a 20 yr old and I am 64. Going to see an endocrinologist in two weeks as I have an under active thyroid and want that checked. They usually start burning when I sit or lie down. Can you suggest anything else I could ask for as it is not a nice feeling. It sometimes goes up my kegs as well. Should I ask for a back x Ray next?