I went through that last summer. It was terrifying. I had the sensation that I couldn't get a deep breath, which made it impossible to run or exercise. This in turn, caused the other auto symptoms to increase.

After going to many docs, I finally saw one who said possibly silent reflux. I am on protonix 40 mg per day and I am very careful about what I eat. I have read that silent reflux can damage the vagus nerve, which causes these symptoms. It only takes a tiny amount of acid to cause silent reflux.

I am so much better now, but still have to be very careful about my day. I only drink water (try to get high alkaline water--if you can't a small amount of baking soda can be added to normal water). One half cup of coffee in the morning and that's it. Zero chocolate. Occasional red meat, mostly chicken, fish, and green vegetables.

I still get episodes of fluttering heart, constant burping, and dizziness---severe chest pain. But it is rarely and when I've eaten stuff not on the list, especially chocolate.

I am so sorry you are experiencing this. I thought I was going to die last summer and no one would know why.

I take magnesium, b12, vit. d, protonix, and drink coconut water every day---right after meals.

If you do indeed have silent reflux, it will take at least a month for your symptoms to get better----even when following the strict diet and taking meds. But it does get better.