The following are some symptoms: The most common and typical symptom is heartburn. It mainly manifests as a burning discomfort or pain behind the sternum and below the xiphoid process. This usually occurs about an hour after eating and may extend upward from the lower end of the sternum to the neck and between the shoulder blades, often accompanied by nausea. Another common symptom is acid reflux, which generally occurs more often on an empty stomach. Another symptom is chest pain, mainly caused by irritation of the esophageal mucosa leading to spasms. There is also difficulty swallowing, which is quite common; initially, it is often caused by a stress-induced spasm. In later stages, it is mostly due to the proliferation of fibrous tissue forming scars, leading to esophageal narrowing. Some less common symptoms include stomach bloating, pharyngitis, cough, asthma, and others.