It is when your stomach pushes up into the cavity under the breastbone from too much gas or overweight. Feeling like you have a very tight bra under the breast area and discomfort under the breast bone. In learning more about heartburn, I found I have symptoms of Haital Hernia, which sometimes comes along with GERD. All symptoms went away within the hour and risidual tingling left. I had a panic attack thinking I was having a heart attack, so breathed into a paper bag and found out that both panic attack and heartburn can cause chest pain and both can cause tingling and even some time afterward. I read up on the internet about heart burn caused by acid reflux and found that laying down can cause the acid to escape and this may cause burning on the heart area, so I took anti-acid, liquid being the fastest. I did some self disagnosis by ruling out each one. Along with tingling on my arms and feet mostly on the left side and I also woke up with slightly sleepy weak arms. Today I started having hard chest pains above my heart like a torn muscle and worsens with movement on my left arm or bending over. I've been able to distinguish the two over time and have had a history with acid reflux. I've had a history with panic attacks and even went into hospital for 4 days stay due to a heart virus, much like a heart attack but wasn't due to blockage etc. Yes there seems to be an association to the tingling and numbness with what you are suffering.

Does acid relux cause arm weakness