A feeding and eating disorder of infancy consisting of the repeated regurgitation of food in the absence of associated gastrointestinal illness.
Rumination disorder is mainly an eating disorder of infancy and childhood. After a period of normal development, an infant or child begins repeatedly and voluntarily to regurgitate and either spit out or (more commonly) rechew food. The food is regurgitated shortly after feeding. Retching or nausea associated with normal regurgitation is not usually seen.