Rumination disorder is a condition in which people repeatedly, unintentionally spit up food from the stomach, rechew it and then typically reswallow the food. Rumination is a reflex and cannot be consciously controlled. It usually occurs in infants after three months and people with developmental disabilities, but can also occur in children, teens, and adults. Symptoms include repeatedly spitting up food and rechewing it. A physician can diagnose rumination disorder based on a patient’s symptoms, but further tests might be necessary to rule out other conditions. Rumination disorder can be treated with behavioral techniques. Counseling parents and improving the environment of the child can also help. If left untreated rumination can damage the tube between your mouth and stomach (the esophagus) and cause unhealthy weight loss.