[Rumination in a young woman].

Rumination refers to bringing up undigested or partially digested food mass from the stomach into the mouth to be rechewed and ingested. This manner of digestion is characteristic of e.g. cattle, but exceptional and likely to cause symptoms for humans. This rare malfunction can be traced on the basis of accurate patient history and confirmed at a test meal by manometry and impedance measurement. Regurgitation may in some patients be triggered by gastroesophageal reflux or air suction into the esophagus caused by an unconscious movement of the pancreas. After the condition has been recognized, behavioral therapy should be primarily considered.