Hello, anxiety can really wreak havoc. I never paid much attention to the term and it seemed like a lesser problem to me, before I got it. My T says it can manifest itself in many ways, physical issues like heart problems, etc, and mental like depression. I have the latter and went to the T thinking I'd get treated for depression, but she's only concerned with the anxiety. Was an eye opener for me.

Link Glok posted is pretty good, I've been going through that a bit lately.