Paeds · mental-behavioural-and-psychosomatic
Pica and rumination disorder
Also known as Pica disorder · Rumination disorder · Rumination syndrome · Geophagia · Pagophagia · Childhood feeding and eating disorders
An age-aware fellowship approach to pica and rumination disorder: distinguish them from normal mouthing, culturally sanctioned practices and true vomiting; run a harm gate for lead, bezoar, helminth and malnutrition before assigning a label; treat reversible drivers such as iron and zinc deficiency; and replace the behaviour with supervision, response prevention and diaphragmatic breathing rather than punitive restraint.
On this page
Study tools
Your progress
Saved on this device.
Practise this topic
Target exams
Red flags
- Pica for paint chips, soil or old-house materials with possible lead exposure
- Abdominal pain, distension, vomiting or constipation suggesting bezoar, obstruction or perforation
- Weight loss, growth faltering, dental erosion or recurrent aspiration
- Neurological signs, behavioural regression or anaemia pointing to lead poisoning or deficiency
- Effortless post-prandial regurgitation with weight loss that is mistaken for reflux or vomiting
- Concealed pica or rumination in an adolescent with eating-disorder, pregnancy or safeguarding concern
- New pica or rumination in a child exposed to abuse, neglect or major family stress
Life stages
Care settings
Clinical exam formats
Board mappings
- General and Community Paediatrics
- Developmental and behavioural paediatrics
- Current 2026 PREP curriculum — Learning Objective: recognise and manage common developmental and behavioural feeding problems
- Renewed curriculum for first-year trainees from 2027 — Learning goal 5: Clinical assessment – essential general paediatrics
- Renewed curriculum for first-year trainees from 2027 — Learning goal 6: Clinical management – essential general paediatrics
- Renewed curriculum for first-year trainees from 2027 — Learning goal 12: Communication with patients, families, and health professionals
- Clinical Applications
- Medical Sciences
- Long Cases
- Short Cases
- 4. Professional skills and knowledge: Patient management
- 5. Professional skills and knowledge: Health promotion and illness prevention
- 8. Keeping up to date and learning from errors and adverse events
- 10. Mental health and behavioural problems
- Foundation of Practice (FOP) — Child mental health, behaviour and feeding
- Theory and Science (TAS) — Nutrition, gastroenterology and behavioural science
- Applied Knowledge in Practice (AKP) — Feeding/eating and gut–brain interaction presentations
- Clinical
- History
- Communication
- Video
- General Pediatrics Content Outline — D5 Mental/Behavioral Health: feeding and eating disorders
- General Pediatrics Content Outline — Universal Task 3: Diagnosis
- General Pediatrics Content Outline — Universal Task 4: Management and Treatment
- Patient Care 4: Clinical Reasoning
- Patient Care 5: Patient Management
- Interpersonal and Communication Skills 1: Patient- and Family-Centered Communication
- Medical Expert
- Pediatrics: Foundations EPA #8 — Communicating assessment findings and management plans to patients and/or families
- Pediatrics: Core EPA #10 — Leading discussions with patients, families and/or other health care professionals in emotionally charged situations
A parent reports that their toddler eats paint chips, or an adolescent effortlessly brings food back up after meals and is losing weight. Both stories can be dismissed as a phase or as reflux, and both can hide serious medical complications. Your job is to sort the behaviour from its consequences, treat the harm first, and only then commit to a label and a behavioural plan. [1] [2]
Harm first (lead, bezoar, helminth, malnutrition) · Anaemia/iron and zinc deficiency · Rule out mimics (mouthing, reflux, vomiting) · Mechanism of the behaviour (deficiency, sensory, learned reflex) · Growth and dentition · Act on reversible drivers · Treat with behavioural replacement, not restraint · Explicit safety-net and review. [1] [2] [12]
Overview & Definition
Picture three children in one clinic session. A fourteen-month-old mouths paper and fluff while teething. A six-year-old with sickle-cell disease chews foam and ice through the day. A fifteen-year-old brings lunch back up effortlessly, re-chews it, and has lost weight. The first is normal development. The second is pica driven by iron deficiency. The third is rumination disorder. Telling them apart is the whole task. [1] [13]
Pica is the persistent eating of non-nutritive, non-food substances for at least one month, in a way that is not developmentally or culturally appropriate and is not better explained by another disorder. Rumination disorder is the repeated, effortless regurgitation of recently swallowed food that is then re-chewed, re-swallowed or spat out, again not better explained by another condition. Both must cause clinically significant harm or impairment before the label sticks. [1] [2]
What makes these disorders easy to miss is that neither looks dangerous on the surface. Pica can hide inside ordinary toddler exploration, cultural practice, or the sensory world of an autistic child. Rumination can masquerade as reflux, vomiting or an eating disorder. The trap is reassurance before the complication screen is done. [2] [11]
References15ShowHide
- [1]Leung AKC Pica: A Common Condition that is Commonly Missed - An Update Review Current pediatric reviews, 2019.PMID 30868957
- [2]McNaughten B Fifteen-minute consultation: the child with pica Archives of disease in childhood. Education and practice edition, 2017.PMID 28487433
- [3]Rubino LG Pica in Childhood: Concurrent and Sequential Psychiatric Comorbidity The International journal of eating disorders, 2025.PMID 40574647
- [4]Schnitzler E The Neurology and Psychopathology of Pica Current neurology and neuroscience reports, 2022.PMID 35674869
- [5]Bryant-Waugh R Development of the Pica, ARFID, and Rumination Disorder Interview, a multi-informant, semi-structured interview of feeding disorders across the lifespan: A pilot study for ages 10-22 The International journal of eating disorders, 2019.PMID 30312485
- [6]Murray HB Comprehensive Cognitive-Behavioral Interventions Augment Diaphragmatic Breathing for Rumination Syndrome: A Proof-of-Concept Trial Digestive diseases and sciences, 2021.PMID 33175346
- [7]Lamparyk K Protocol and Outcome Evaluation of Comprehensive Outpatient Treatment of Adolescent Rumination Syndrome Journal of pediatric gastroenterology and nutrition, 2022.PMID 35687569
- [8]Khoo JS Impact of diagnostic testing on outcomes of children with rumination syndrome Journal of pediatric gastroenterology and nutrition, 2025.PMID 39803885
- [9]Rosen R Rome V Pediatric Upper Gastrointestinal Disorders of Gut-Brain Interaction Gastroenterology, 2026.PMID 41713704
- [10]Sawada A Belching Disorders and Rumination Syndrome: A Literature Review Digestion, 2024.PMID 37844547
- [11]Pomenti S Current state of rumination syndrome Diseases of the esophagus : official journal of the International Society for Diseases of the Esophagus, 2024.PMID 38741462
- [12]Dave M Lead exposure sources and public health investigations for children with elevated blood lead in England, 2014 to 2022 PloS one, 2024.PMID 39024259
- [13]Gresko S Longitudinal Trends of Pica Behaviors, Behavioral Support, and Healthcare Utilization in Pediatric Sickle Cell Disease Pediatric blood & cancer, 2026.PMID 41834333
- [14]Kambanis PE Prospective 2-Year Course and Predictors of Outcome in Avoidant/Restrictive Food Intake Disorder Journal of the American Academy of Child and Adolescent Psychiatry, 2025.PMID 38718975
- [15]Lipton BA Baylisascaris procyonis Roundworm Infection in Child with Autism Spectrum Disorder, Washington, USA, 2022 Emerging infectious diseases, 2023.PMID 37209678