why does gastroesophageal reflux causes chestpain on the left side?

Answer 1

It can, but you should have it checked out by a doctor. If there is any arm pain along with it call 911 or get to an emergency room.The doctors told me that the nerves that run in the esophagus go from the center of body to the outside of the ribcage. The nerves can cause the pain to be sensed anywhere it runs.