what can cause burning in chest
1 Acid reflux is a common condition. It occurs when stomach acids and other stomach contents back up into the esophagus. 2  Reflux symptoms are more common when lying down or bending over, after a heavy meal, and after a fatty or spicy meal.  Heartburn is the most common symptom of acid reflux. Your stomach is protected from the corrosive effects of stomach acid. If your lower esophageal sphincter doesnât prevent your stomach acid from leaking out of your stomach and into your esophagus, you will experience a painful burning sensation in your chest.