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Related to rumination disorder: encopresis
rumination disorder[‚rü·mə′nā·shən dis‚ȯrd·ər]
A childhood eating disorder that involves repeated regurgitation and rechewing of food. This behavior is not the result of a gastrointestinal or medical condition; the partially digested food comes back into the mouth without any observable nausea, disgust, or attempt to vomit.