The last couple of days I've had some weird feelings of anxiety. It resembles the feeling that one gets right after you've been startled or had a big scare. I've had one panic attack before, just out of the blue, but I also had a dental abscess at that time. This time, I'm having some cold symptoms and chest congestion. So now I'm wondering if an infectious process in the body can trigger a panic attack. It's a very uncomfortable feeling.