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Rumination disorder
Definition:
Rumination disorder is repeated regurgitation and rechewing of food. Symptoms must persist for at least 1 month. There does not appear to be upset, retching, or disgust associated with the regurgitation, and it may appear to cause pleasure. Causes, incidence, and risk factors:
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Onset of rumination disorder usually occurs after 3 months of age, following an established period of normal digestion. It occurs in infants and is rare in children and adolescents. The cause is often unknown. Certain problems, such as lack of stimulation of the infant, neglect, and high-stress family situations, have been associated with the disorder.
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