Maybe you can send your test results to Mayo first and see what they say before going there. I am very sensitive to temps. My issue is more with the cold but humidity heat hurts me very badly. I have pn but similar to rsd too.Now I am no expert but have you looked into other diagnosis other then pn like fibromyalgia? Sometimes I think we concentrate on one dx but there may be more. The fatigue stands out to me as something that is in fibromyalgia or myofacial pain I think it is?Hang in there