Oesophageal spasm is a disorder of oesophageal motility. The oesophagus normally propels food from the upper oesophageal sphincter towards the stomach through waves of co-ordinated muscle contraction, or peristalsis. When these waves do not progress normally, oesophageal spasm can result.
This is a companion discussion topic for the original article at https://patient.info/doctor/gastroenterology/oesophageal-spasm