Rumination disorder is an eating disorder that causes people to spit up (regurgitate) swallowed food.
People usually spit up a small amount of food about 15 to 30 minutes after eating
Sometimes people re-chew the food and then either swallow it again or spit it out
Spitting up food isn't the same as throwing up (vomiting). Throwing up is forceful and uncomfortable. Material from your stomach shoots out of your mouth.
People with rumination disorder may:
Try to hide what they're doing by putting their hand over their mouth or coughing
Avoid eating with others so people don't see them spitting up food