I just read the first two books of CBT4PANIC and at first felt good but then for some reason started having one surge of panic after the next. I am shaking and crying, I am currently on xanex and just started lexapro (second day). Been having panic attacks on and off now for 5 weeks since getting a pinched nerve in the neck. Had GAD and panic but have been free from panic for many years after going through CBT some years ago. What is going on.