Understanding

Rumination Disorder

Rumination disorder is a feeding and eating disorder in which recently swallowed food comes back up effortlessly — without nausea, retching, or the acid taste of vomiting — and is then re-chewed, re-swallowed, or spat out. It is treatable, often highly responsive to a simple breathing technique, yet it is frequently misdiagnosed for years.

Also known as: Rumination syndrome, merycism

Affects infants, children, and adults of all body sizes; commonly underdiagnosed, with reported diagnostic delays of roughly 2–6 years

Written by the Eating Disorder Facts editorial team Awaiting clinical review by Cindy Hawthorn, MD Updated July 20, 2026

Note: "rumination" also refers to repetitive, anxious overthinking. This page is about the eating and gastrointestinal disorder — the physical regurgitation of food — not the thinking pattern.

What is rumination disorder?

Rumination disorder is recognized in the DSM-5-TR as a feeding and eating disorder and overlaps with what gastroenterologists, using the Rome IV criteria, call rumination syndrome. Its defining feature is the repeated, effortless regurgitation of food that has recently been eaten — typically beginning within minutes of a meal and continuing for up to about two hours. The food is often still recognizable and not sour, because it has not yet mixed with much stomach acid.

To meet diagnostic criteria, the regurgitation must occur repeatedly for at least one month, not be explained by a gastrointestinal or other medical condition, and not occur only during another eating disorder such as anorexia nervosa, bulimia nervosa, binge eating disorder, or ARFID.

How it differs from vomiting and GERD

Unlike vomiting, rumination is effortless and painless: there is usually no nausea, no retching, and no distress. Unlike gastroesophageal reflux disease (GERD), it is not driven by stomach acid and does not respond to acid-suppressing medications like proton pump inhibitors. Because it can look superficially like reflux or a vomiting disorder, rumination disorder is often misdiagnosed as GERD, functional vomiting, or gastroparesis — leading to unnecessary tests and years of delay before the right diagnosis is made.

The premonitory urge and what drives it

Many people with rumination disorder notice a build-up of pressure or a sensation in the abdomen or chest just before an episode — a "premonitory urge" that is relieved by the regurgitation. The mechanism is an unconscious, learned contraction of the abdominal wall muscles that raises pressure in the stomach while the valve at the top of the stomach relaxes, allowing food to travel back up. It is not deliberate and not the same as making oneself vomit.

Who it affects

Rumination disorder was historically described mainly in infants and in people with intellectual or developmental disabilities. It is now recognized across the lifespan, including in otherwise healthy children, adolescents, and adults. It occurs in people of every gender and body size.

Recognize

Signs & Symptoms

Effortless regurgitation of food, usually beginning within minutes of eating

Re-chewing, re-swallowing, or spitting out the regurgitated food

Absence of nausea, retching, or the sour/acid taste typical of vomiting

A premonitory sensation of pressure or fullness in the abdomen or chest before episodes

Regurgitation that is not preceded by gagging and does not appear distressing or deliberate

Bad breath (halitosis) and dental erosion over time

Unintended weight loss or difficulty maintaining weight

Abdominal discomfort or fullness that eases after regurgitation

Avoiding eating around other people out of embarrassment

In infants: repeated regurgitation with straining or arching, irritability, and poor weight gain or failure to thrive

Understand

Causes & Risk Factors

No single cause has been identified. Eating disorders arise from a complex interplay of genetic, biological, behavioral, psychological, and social factors.

A learned, unconscious habit — often beginning as a self-soothing or self-stimulating behavior that becomes automatic

Intellectual or developmental disabilities, in which rumination can start as self-stimulation and be unintentionally reinforced

In infants, insufficient stimulation or a disrupted caregiver relationship that prompts self-comfort

A preceding physical illness, gastrointestinal infection, or period of vomiting that "trains" the pattern

Psychological stress, anxiety, or depression

High family stress, discord, or major life disruption

The behavior is distinct from, and diagnosed separately from, anorexia, bulimia, binge eating disorder, and ARFID

Health Impact

Health Consequences

Eating disorders have serious medical consequences and can be life-threatening if untreated.

Malnutrition and unintended weight loss when a large share of food is lost
Dental enamel erosion and tooth decay from repeated exposure to stomach contents
Chronic bad breath
Irritation of the esophagus and throat
Electrolyte disturbances and dehydration in severe or prolonged cases
Failure to thrive and impaired growth in infants and young children
Risk of aspiration (food entering the airway)
Embarrassment, social withdrawal, anxiety, and reduced quality of life

Healing

Treatment Approaches

01 Diaphragmatic (belly) breathing — the first-line treatment; slow breathing using the diaphragm physically competes with the muscle contractions that produce regurgitation, especially when practiced during and after meals

02 Biofeedback-guided breathing — using visual feedback of abdominal muscle activity to help patients learn the technique, particularly effective in adults and adolescents

03 Habit-reversal training — building awareness of the premonitory urge and substituting the competing breathing response

04 Cognitive behavioral therapy (CBT) — addressing stress, anxiety, and behavioral patterns that maintain the disorder

05 Treating co-occurring anxiety or depression

06 For infants and people with intellectual disabilities — caregiver-guided behavioral strategies, increased nurturing interaction, and environmental enrichment

07 Nutritional support to correct deficiencies and restore weight when needed

08 Medication (such as baclofen) reserved for cases that do not respond to behavioral therapy

09 A multidisciplinary team combining gastroenterology, behavioral health, and nutrition

There is hope

Recovery is possible with the right help.

Talk to a professional who specializes in eating disorder treatment.

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FAQ

Frequently Asked Questions

Sources