Rumination is characterized by voluntary regurgitation of stomach contents into the mouth, which are either expectorated or rechewed and reswallowed. The regurgitation is not caused by an associated gastrointestinal condition or other medical disorder. Rumination is a rare disorder that is most commonly seen in infants or persons who are developmentally disabled. It also occurs in children, adolescents, and adults with normal intelligence, albeit much less often. Insufficient awareness of the condition has led to underdiagnosis, with rumination frequently confused with bulimia nervosa, gastroesophageal reflux disease, and upper gastrointestinal motility disorders (Chial, Camilleri, Williams, Litzinger, & Perrault, 2003).When not appropriately diagnosed and treated, rumination can lead to serious complications, including weight loss, malnutrition, dental erosions, halitosis, electrolyte abnormalities, and significant functional disability (O’Brien, Bruce, & Camilleri, 1995).