I suffered from agoraphobia and panic attacks for many years. I was unable to drive, standing in line at stores was usually more than I could take, eating out was a horror because I was afraid of choking, and eventually I could not even go to my mailbox.
With no warning, my heart would start racing; my hands would feel as if they did not belong to me, I would feel like I had risen up above my body, I would be terrified.