I have a burning\tingling in my legs and hands. had mri and diabetic test done. what else could be causing this? both came back clean. important 27 fe

Neurologist: The best course of action would be to see a neurologist and have a full evaluation.

Needs more workup: There are multiple causes for paresthesias, and a more extensive lab workup (e.g. Checking for b12, thyroid, and diabetes (using a glucose tolerance test, not just a fasting sugar or a1c)) can be helpful. Additional information can often be gleaned from functional testing (such as nerve conduction studies) and/or skin biopsy to look for small fiber neuropathy. A neurologist can help guide workup.

Restless legs : It is possible you may have restless legs syndrome. Check with your doctor to see if you are anemic. Have him check your ferritin level also.

Possible neuropathy: Neuropathy can happen as a result of trauma, or nerve damage due to the consumption of alcohol or certain medications. Symptoms can range from a numbness and tingling sensation, possibly a burning sensation, to an uncomfortable painful sensation of the extremities. Get evaluated by a professional to determine the exact cause in order to get the appropriate treatment.