I would go with the mantra that, "they don't understand you if they don't have it." It's a lot to expect others to really know and understand what you and everyone here is going through. With a little education (the threads mentioned here about certain resources you can point them to) might help, but they still don't have it and don't get it.

I find that I only explain it to those who are really important to me, which also means those who I work with closely and have frequent interactions with.

I recently wrote an email to these people at work explaining also some of the temporary provisions I expect from them to help support me. Things like, talking one person at a time at meetings, less involvement in certain projects, why I leave the room, headaches, attention, etc. So far, they've been receptive to these ideas in hopes of course, they are temporary.