This ME/CFS seems to be a not very well defined thing, at least I can't find what exactly is within the scope and what not. If someone has only mental fatigue, but not physical, can it have anything to do with the topics of this forum? I find that especially two kinds of thins exhaust mentally much beyond "normal": 1) making decisions (even trivial ones, like which socks to wear or choosing the order in which to eat things from the fridge), but especially arbitrary decisions, so in fact some larger decisions can tire me much less if they have well defined reasons to analyze and progress one way or the other. 2) being with other people, especially in amounts larger then two I find that after the above I need extensive amounts of time to regenerate by not making decisions (ANY decisions, even and especially super-trivial ones) and/or being alone. Only a small part of my day (like way less then 20%) can be occupied by decision making and interacting with more then one person, for me not to feel mentally exhausted. Is this a problem within the scope of this forum at all?