I'm not sure how many people know, but I have frequent PVC's, which are Premature Ventricular Contractions in the heart, and it can be be uncomfortable and scary. It feels like your heart skips a beat. If you can imagine how it would feel if your heart "hiccupped" a lot, obviously many would be worried, also. While I have been to the cardiologist and was told my heart is healthy and strong, and many people have PVCs, I still get anxiety when the PVCs occur. Sometimes they go away for a while, and sometimes, (like recently), they come back in full force.
I have been asking God to heal me of these PVCs, and I believe He will.
I have also found an interesting website during my research that has soothed my anxiety somewhat because it lets me know that there are other people out there with the same symptoms that I have.
http://pvc-ectopic-support.blogspot.com/2009/01/panic-and-anxiety-and-how-theyre.html