Anyone have SFN and then diagnosed with Lymphoma? I am only 42 and was diagnosed with SFN this past summer. I suffered for 3 years with burning in my feet and crampy calves. I finally have the pain under control with lyrica and cymbalta, but now am being tested with lymphoma. I just wonder if SFN could be a symptom of lymphoma? I have already had all other causes ruled out, but now I have some symptoms of lymphoma. Thanks