Yes. Like a mouse on a wheel and he can't get off.
An overactive sympathetic nervous system, also known as the body’s fight or flight response is closely linked to fibromyalgia. Any perceived threat or stressful situation can trigger the fight of flight response. The fight or flight response is designed to help us function in emergency situations. It is meant to be a response that only lasts a short time and then turns itself off. With fibromyalgia, the fight or flight response gets stuck in the “on” position playing havoc with our body, our emotions and our ability to think clearly.

My "brain fog" I explain as my brain will not completely wrap itself around any one thing. I have trouble staying on task or completing something. I have to make myself follow steps to finish things sometimes. Some days I just have to let things go and try later.

Yes my brain will get stuck at times in a train of thoughts that I have trouble with getting out of. I thought I was the only one. I also gets fibro fog which is different. Forgetting names, forgetting where I put things, and what I want to say, mixing up my words, are all fibro fog.

I find that I get tired & have more pain when a discussion goes for too long or is stressful.

Interesting...i too lost my vocabulary...slowly but i have trouble carrying on an intellectual conversation now....