Obsessive thoughts concerning extreme, recurring ideas or concepts that interrupt other types of cognitive actions; a typical element of obsessive-compulsive disorder. Chronic regurgitation of minimal amounts of undigested food items with minor impetus after each meal; an ailment frequently observed in babies or individuals with serious mental handicaps. Possibly a sign of overfeeding, of consuming food too rapidly, or of ingesting air. Also known as: merycism.

RUMINATION: "For a depressive personality, it is easy to get lost in rumination."