I'm thinking it is like BNLsMOM said, maybe its a side effect of your meds. There are certain anti-psychotics and mood stabilizers I've been on that make me just sort of brain dead. I still have problems with word loss (like i know the word I need to say but it won't come out for some reason) when I am talking, but thankfully I only ever talk to my husband and son and they are used to it. But there have been times that I was so muddled I couldn't do grocery store math in my head. When was the last time you changed/adjusted meds? Could that be the problem?