I also get these-out of the blue attacks, in the afternoon, usually when I´m not doing anything.. nothing that triggers it. It is usually the time I finally get to relax a little after a hard day of anxiety and then poof bamm, attack.
Can´t find out why this happens... maybe just stressrelease or something.
Fluanxol is starting to work for me a bit, it has a calming effect... but to soon to tell.
Sobril 25mg 3x daily gets me a bit drowsy, but getting used to it..
Take care and stay in touch.