Which medical school did you attend?

The suggestion that somebody sleeps consistently, achieves a normal weight, and reduces caffeine intake, is probably the least contentious advice in the thread. And he's receiving plenty of medical treatment, there's no need to be concerned.

> I had multiple blood tests, which are nearly perfect, except glycated hemoglobin, which is slightly elevated, but not at the diabetes level. I had gastroscopy, X-rays, and head MRI, two EKGs, echocardiogram, all normal. I'm finishing some heavy antibiotic treatment, which seems to have done nothing.

Sorry if I wasn't clear. I feel like I'm dying only during those 10-minute attacks. Other than this sickness my life is as stress free as it gets: enough money, live in a house, no neighbors to irritate me, beautiful area with a lake, great climate, I work on my own programming projects, I play with my kids. I'm also a very zen guy in general, almost nothing sets me off. Think Sam Harris level calm.

I did stop drinking caffeine as soon as I got this sickness. I did have bad sleep patterns, but am fixing them now.

I suppose it's possible that you do have some illness that no doctor has been able to diagnose.

I'm also a pretty calm guy and don't often get "stressed" in the typical sense, but also had similar symptoms to you which also couldn't be diagnosed or observed by doctors.

Impression of me then: "I've stayed up late for months now, drinking coffee alone, working, and trying to figure out what could possibly be causing these anxiety-like problems. I've checked the symptoms for cancer, AIDS, Lyme disease, and general death repeatedly and nothing quite fits. What...could...be....causing 'attacks' of 'anxiety'....hmmm sips coffee" :)

If you're sleeping well, a normal weight, not intaking alcohol and caffeine, it'll at least rule a few things out.