Sorry to resurrect the thread but I came across this one googling - your symptoms overlap mine in quite a strong way.
I thought my issues were caused my magnesium deficiency also, but it wasn't the case. There are lots of compelling websites that link to or sell magnesium products. That said, perhaps magnesium is still useful for many.
Basically, you're NOT EATING ENOUGH. Especially since the onset. You'll need to force 3000+ calories down despite the lack of any appetite (it'll come back to some degree after 2 weeks to a month, but you'll be feeling far better by then).
Even if you were not underweight before the events described, it's entirely possible you were undereating, especially if we were active. Please please read youreatopia blog and archived forums.. I don't suggest living off sugary foods (and never ever drinks), however if that's what you need to get you started then go for it.
See this also -
http://forums.phoenixrising.me/inde...-severe-anxiety-for-months.44786/#post-732917
Eat more, please. It's a hard road but it's far easier than living with what you have. I have no idea how you've done it for so long. I hope you read this.
TLDR: The reason your adrenals couldn't cope in the first place is because you weren't eating enough calories. Wellness industry and life stresses or the desire to eat clean, or a busy job, or caffeine, or a million other reasons can cause people to eat too little calories. Unless you're eating around 3k calories per day (especially if you're exercising) as a male then you're probably not eating enough.
Appetite and metabolism adjusts to undereating often, so you'll need to force yourself for a little while. Adrenal fatigue is often (very very very often) just undereating / overexercising. I was eating 1600-2000 calories a day and many dieting or fitness sites would suggest this is fine. It is not - I'm 5'9 and male.
Please eat more! You will get better, trust me.