I know exactly what you mean. I have to stay away from high amounts of caffeine because it makes them worst. To add to it, I have heart murmurs and that can make things really scary. The first thing they tried to put me on was Paxil and that only made things worst and then they put me on Zoloft and it helped me. Some things just don't work for certain people. I have them less often now, though I'm not on meds anymore.