I'm new here but have been following these forums for a few months. My main question is whether one can have CFS without the debilitating fatigue? That is, I have a large amount of the other symptoms, and I do feel lethargic throughout the day and not rested in the morning but I am still able to function, for the most part... It's suspected I have a mast cell disorder but my symptoms have changed over the past few months that I feel I fall under the scope of CFS symptoms more than MCAS symptoms, though I still have a few. I realize there is a school of thought that CFS and MCAS might be linked somehow which is how I stumbled on the CFS forums. This all started after I got sick in Nicaragua in 2010 and it slowly slipped down hill from Post Infectious IBS to now this, what ever it is. The other reason I ask is my B12 is quite elevated and I have been reading the B12 treatment protocol and find it very intriguing. Any thoughts? I could list my symptoms but I'm getting ready for bed and the list is LONG and has changed over time. But if that might help people let me know. At the end of the day it doesn't really matter WHAT I have, but more what will help. I'm just curious.