I tell people that the fatigue is when you do nothing but look for a good place to lie down. You are so overwhelmed with being tired that it almost hurts. Even the Lawrence Welk show is exausting to watch. My cog issues I describe as: imagine staying up for 48 hrs and then try to take an algerbra test the following day......thats how that feels. Or listen to Mr Rogers explain how to tie your shoes and still not "get it".