I've got a huge mass on the back of my neck on the right side. I also have extreme fatigue and many other symptoms. Any ideas what it might be?

R/O NHL /FATIGUE EVAL. FATIGUE EVAL WITH LYMPH NODES: you need full EXAM AND labs. CBC/CMP/B12/FOLATE /MONOSPOT EBV/CMV/TFTS/VITD/CRP//SED RATE//IRON STUDIES/LYME TITERS. If your exam suggests enlarged liver or spleen a CT OF CHEST/ABD/PELVIS IS NEEDED. The enlarged node may need BX. While work up is under way. Gluten free diet Wholeapproach.com gutbliss.com. And high potency vitamins. Rejuvenation-science.com.