I have not gotten a clear answer on that one. It's one of those that the GI dr will say MS and the neuro will say GI. I do have a motility disorder with difficulty swallowing as well as other GI issues so who knows the real cause.

It is my understanding from the dr that nitro increases blood flow to the area which helps. My PCP also recommended taking a lorazepam (Ativan) as it will help relax the muscles. I've only had it happen once but the spasms lasted a good 48 hours. They did admit me to the hospital for observations and testing to make sure it was not cardiac related. All tests came back normal with the exception of some PVC's, which I've had for years.