For people that also have GERD or Asthma, these things can also mimic the chest tightening, or even arm pain that feels like angina.
Guess What? If you have known angina, you still take the nitro! It won't hurt you and it some cases if it's caused by your bronchioles spasming, or esophageal spasming, it may also help that as well. But you never want to take a chance and guess that it's something else, and then not take the nitro.
I have all three of the above, and I've taken the nitro and found out it was GERD, or asthma later, but I never wanted to take the chance in case it was the angina.
Be Well. Hugs, Teri
"Because he is he and I am I."......E. V. Lucas