I have had this happen a few times, it's especially distressing when it is negative thoughts racing and looping in my head. The only thing that stops it for me is an antipsychotic, saphris has been my med of choice most recently. Before I could get in to my dr the last time, I was shutting myself down with klonopin. I was so exhausted and distressed I had to make something shut my brain up. I am afraid of the benzos though, so definitely was happy to get the AP.