@Pangloss,
I've never had a stress test, although I'm sure it would probably benefit me in some way. I do live in Smalltown, USA. We have many older doctors. Our younger doctors put me under the impression of not caring.
I have been prone to panic attacks, which I have been admitted to the ER for. My panic attacks are accompanied with extreme stress, dread, anxiousness, etc. They also last much, much longer and I have medicine to reduce my symptoms. The first time I had vision loss and a racing heart, I took my medicine because I, too, thought a panic attack was occuring. It wasn't. My vision loss does not follow strong emotions.
My symptoms mirror hyperventilation, but I've only hyperventilated once and I had different symptoms with it that I don't get along with these symptoms. My fingers tingled, I couldn't sit up because of such a severe stomach ache, I was unaware of my surroundings, and I couldn't think well enough to formulate a reply to anything. My vision loss isn't like that. I can think perfectly fine and my fingers don't tingle no matter how severe my episode has been.
I have never been diagnosed with depression or a Type A personality.