Can anyone describe what "Brain Fog" is?

[Rite760]

You lot out there so often refer to "brain fog". Can anyone give their version of what it means? I'm not sure if it's what I think it is or something else. Does it mean that you just can't think straight? Like you're somewhere else? You know what you want to say but it comes out muddled and you feel stupid? Or does that just mean I'm naturally stupid!!!

[maggiesue65]

I put jojo because I can't remember who started this. I have frog fog too. I didn't know what it was. I am hypo, waiting to see if I have ms and going to have surgary on that back side thing, parathyroib. Can parathyroid cause it/. I can't believe so many have this, it is not wonderful but I'm not crazy now. maggiesue65

[jojo2008]

Count me in too! IM CRAZY!.....lmbo.
Yes I can be fine one day or minute and then the next im in that fog or "daze". I often find my self frightened of it too. There has been many times on the express way feeling like im in a fog and often wondering if I would get into an accident. Then I would give my self a panic attack and would have to stop the car!
I was once told ...The crazy ones are the ones that dont think they are crazy......Now those are the ones to watch out for!

[Rite760]

I'm really glad I posted this question because it has generated so so many responses and is still doing so and everyone of them had been fantastic. And I just wanted to say I'm knew to all this thyroid stuff so I'm never sure what is normal or not! But aswell as the other things, I too get what you get so exactly the same as you. When the brain fog comes I panic and feel so scared because to me it's as though I'm losing control. And I also get it one day, then nothing a day or two, then back again for three days, nothing for one day etc. So I honestly know exactly what you mean. So if it means "crazy", then we're both crazy together! We'll keep each other going.

[Applecore]

I have a question to ask of those of you that posted.  Do you feel "normal" at times and then back to the brain fog which for me is tenseness and feeling fear because of it along with all the other symptoms you all mentioned.   I don't understand how I can feel good no brain fog or other symptoms one day and the next have everything back.  I am on a low dose of synthroid because I can't tolerate more that 37.5 mg.   What do you think am I crazy or not.  How can you feel "normal" one day and yucky the next.  I am grateful that I have a normal day once in a while.  Hopefully this will get more and more as time goes on.  linda

[elvira333]

All of these posts are such true descriptions!  I have always felt the brain fog as a feeling of being "out of it" (sort of like the description somebody posted of the fluffy clouds) or like somebody spiked my drink with something to "sloooowwwwwwww me down......"..I didn't like driving much for some time, it was a very scary feeling when driving down the freeway being passed by very noisy BIG trucks as my "alertness" had just about gone, the noise of the traffic seemed amplified, and I must have been driving about in a daze!  However, I also found it a very difficult feeling to describe to my doctor because by the time I got there I'd usually forgotten to tell him or her how I had been feeling......and was usually too tired to care anyway!!!  

[Kateee]

For me, the most obvious part of it is forgetting the name for something.  LIke I'll say, can you hand me the...the...the thing with the handle....  

Kateee