Hi ,
The simple answer is absolutely. This is something I struggle with on a daily basis. It's easily upsetting as I want to feel sharp and energized. The hardest part is that I feel I am unable to remember things as well as the people around me. To combat this I try my best to write as many things down as possible. For me, this includes things I need to do, any thoughts I have, and experiences in my life. I also try to play brain games to keep my mind stimulated. These techniques really help me and make me feel like I have a better handle on my brain fog.
Best of luck!
Franki, https://RheumatoidArthritis.net Team