The esophagus is a muscular tube that joins your mouth to your stomach. Coordinated contractions (peristalsis) in the muscles in the esophagus help food move down to the stomach. When these muscles tighten or contract abnormally, it's known as spasm.
Esophageal spasms may feel like food is stuck and won't go down. It may cause a feeling of heartburn or a squeezing type of chest pain. The pain may spread to the neck, arm, or back. This pattern of pain may mimic heart pain or angina. If you try to swallow more food or liquid during a spasm, it may come back up within seconds (regurgitation). Symptoms may last for a few minutes to an hour. They may occur from time to time, or they may be persistent in some cases. Certain foods or fluids may trigger symptoms, such as very hot or cold liquids or foods not chewed well.
The exact cause of esophageal spasms is not known. But they often occur with acid reflux and GERD (gastroesophageal reflux disease). Long-term acid reflux may increase the acid content in the esophagus, causing spasms. Problems with nerves supplying the esophageal muscles may also play a role.
Your doctor will diagnose esophageal spasm based on your medical history, a physical exam, and certain tests. These may include barium swallow, endoscopy, and esophageal manometry.