KU is absolutely right that the first thing to have them look at is a cardiac cause.
Digestive problems, especially GERDs can also cause big discomfort. I had something Saturday morning that had me debating about a detour to the emergency - the pain was excruciating and I was pacing the floor. Pardon the unladylike TMI here, but a rather healthy belch after I threw down a handful of TUMS, quieted the discomfort.
I hope you get some answers from the neurologist soon.
be well,
L
Did they do an EKG to make sure this is not heart related? I hope they find out answers soon!