反刍综合症是指经常性的将已经吞咽下去的正常食物吐出或是咀嚼后再咽下的一种进食障碍，过去这种疾病只在儿童身上出现，但如今它在成年人身上出现了上升趋势。

医学导航：心理学／精神病学

心理历程

障碍（o, p, m, p, a, d, s）
症状／齐名／涉及

操作（评估／治疗）
药物（N5A/5B/5C/6A/6B/6D）

Rumination syndrome, or Merycism, is an under-diagnosed chronic motility disorder characterized by effortless regurgitation of most meals following consumption, due to the involuntary contraction of the muscles around the abdomen. There is no retching, nausea, heartburn, odour, or abdominal pain associated with the regurgitation, as there is with typical vomiting. The disorder has been historically documented as affecting only infants, young children, and people with cognitive disabilities (the prevalence is as high as 10% in institutionalized patients with various mental disabilities). Today it is being diagnosed in increasing numbers of otherwise healthy adolescents and adults, though there is a lack of awareness of the condition by doctors, patients and the general public.