Heartburn, or acid indigestion, is a common cause of chest pain due to acid reflux, according to Healthline. Heartburn generally occurs after eating a heavy, fatty or spicy meal and causes a burning sensation from the stomach up the chest to the throat.
Stomach acid splashing back up from the stomach into the esophagus causes heartburn, according to WebMD. Individuals commonly feel chest pain when lying down, bending over and eating, and the pain may last up to a couple of hours. Other symptoms include difficulty swallowing, a feeling of something being stuck in the throat, or the taste of something hot, acidic, sour or salty at the back of the throat. A chronic cough, hoarseness or sore throat may also develop as a result of heartburn.
Many people mistake the chest pain from heartburn with heart attack symptoms since many symptoms overlap and occur in similar groups of people, notes WebMD. Heartburn is more likely to cause a sharp pain just below the ribs or breastbone. In the case of heartburn, a person isn't likely to break out in a cold sweat or to experience pain spreading to the shoulders, neck and arms as he may during a heart attack. Additionally, if an antacid helps relieve symptoms, it's a good indication the cause was heartburn.