Brain fog is kind of a nebulous term. It’s real though. Lots of causes and symptoms. But yeah, inability to focus and fatigue are big hallmarks. It’s just . . . a different flavor of those symptoms. More insidious. Slower and diffuse, affecting your whole body. I always thought of it like I was constantly walking up a slope. Not a super steep mountain, just a gentle uphill slope. Literally everything was uphill from me, my goals, necessities, emotions, everything. After a while you’re so worn through because you’re always climbing. This isn’t only a bodily fatigue. Imagine “thinking uphill.” Knowing that you have to pick up medicine tomorrow is like holding onto a piton for hours. If you let go then you’re falling. You can’t write it down either because fetching a stickie note might make you forget. Those daydream fantasies we escape to when we’re tired become mountains in of themselves. You want to think about them but it’s too taxing. You’d rather let thoughts pass above you than chase them.