Pica and Rumination Disorder

Pica - Craving Curiosities

• Persistent eating of non-nutritive, non-food substances for ≥ 1 month.
• Behavior is developmentally inappropriate (not diagnosed in children < 2 years old).
• Not part of a culturally sanctioned or socially normative practice.
• If co-occurring with another disorder (e.g., Autism Spectrum Disorder, Intellectual Disability) or medical condition (e.g., pregnancy), it is severe enough to warrant separate clinical attention.
• Common Forms & Substances:
  • Geophagia (earth, soil, clay)
  • Amylophagia (raw starch, e.g., cornstarch)
  • Pagophagia (ice) 📌 Mnemonic: "P"agophagia for "P"ure ice.
  • Lithophagia (stones, pebbles)
  • Others: paint chips, paper, hair, cloth, string.
• Key Associations:
  • Nutritional Deficiencies: Iron deficiency anemia (esp. with pagophagia), zinc deficiency.
  • Neurodevelopmental Disorders: Intellectual Disability (ID), Autism Spectrum Disorder (ASD).
  • Pregnancy.
  • Socioeconomic Factors: Poverty, neglect, lack of supervision.
• Potential Complications:
  • Toxicity: Lead poisoning (from paint chips), heavy metal poisoning.
  • Gastrointestinal: Obstruction, perforation, bezoars, parasitic infections (e.g., toxocariasis).
  • Dental injury, malnutrition.
• Management Principles:
  • Screen for & correct nutritional deficiencies (especially iron).
  • Behavioral interventions (e.g., positive reinforcement for appropriate eating).
  • Ensure a safe and enriched environment.

⭐ Pagophagia (compulsive ice eating) is a specific craving highly suggestive of, and often a presenting symptom for, iron-deficiency anemia.

Rumination Disorder - Regurgitation Reflex

• Repeated regurgitation of food for a period of at least 1 month.
  • Food may be re-chewed, re-swallowed, or spat out.
  • Not attributable to an associated gastrointestinal or other medical condition (e.g., gastroesophageal reflux, pyloric stenosis).
• The eating disturbance does not occur exclusively during the course of Anorexia Nervosa, Bulimia Nervosa, Binge-Eating Disorder, or Avoidant/Restrictive Food Intake Disorder.
• If symptoms occur in the context of another mental disorder (e.g., intellectual developmental disorder, neurodevelopmental disorder), they are sufficiently severe to warrant additional clinical attention.

• Clinical Presentation:
  • Effortless regurgitation, typically within 10-30 minutes of initiating or completing a meal.
  • No associated nausea, retching, disgust, or abdominal pain.
  • Behavior may appear habitual or self-soothing; individuals may seem to derive satisfaction.
  • Can occur in infants (often begins between 3-12 months of age), children, adolescents, and adults.
  • Infants: May arch their back, strain, hold head back, make sucking movements with tongue.
• Associated Problems & Complications:
  • Weight loss, failure to make expected weight gains (failure to thrive in infants/children).
  • Malnutrition (e.g., electrolyte disturbances), dehydration.
  • Dental erosion, halitosis (bad breath).
  • Social isolation, shame, avoidance of eating in public.
• Management Focus:
  • Behavioral interventions: Habit reversal training (HRT), diaphragmatic breathing exercises, relaxation techniques.
  • Distraction and positive reinforcement, especially for children.
  • Addressing any psychosocial stressors.

⭐ Unlike vomiting, the regurgitated food in rumination disorder is often undigested and may retain a palatable taste, which can reinforce the behavior through re-chewing and re-swallowing for some individuals.

Pica & Rumination: Dx & Mx - Tackling Troubles

Pica

• Dx: Persistent eating of non-nutritive, non-food substances (≥ 1 month). Inappropriate for developmental level (not < 2 years old). Not culturally supported. If with other disorder/condition, warrants extra clinical attention.
• Mx:
  • Address nutritional deficiencies (e.g., iron, zinc).
  • Behavioral interventions (e.g., positive reinforcement for appropriate eating, discrimination training).
  • Environmental modification (e.g., restrict access to pica items).

Rumination Disorder

• Dx: Repeated food regurgitation (≥ 1 month); may be re-chewed, re-swallowed, or spat out. Not due to GI/medical condition. Not exclusive to other eating disorders. If with other disorder, warrants extra clinical attention.
• Mx:
  • Behavioral therapy: Habit Reversal Training (HRT) is cornerstone. Includes awareness training, competing response (e.g., diaphragmatic breathing).
  • Psychoeducation for patient & family.

⭐ In Rumination Disorder, regurgitation is often effortless and not associated with nausea or disgust, unlike vomiting.

High‑Yield Points - ⚡ Biggest Takeaways

• Pica: Persistent eating of non-nutritive substances (e.g., soil) for ≥1 month; developmentally inappropriate (not before 2 years).
• Key Pica associations: iron-deficiency anemia, lead poisoning, Intellectual Disability (ID), Autism Spectrum Disorder (ASD).
• Rumination Disorder: Repeated food regurgitation (re-chewed, re-swallowed, or spat out) for ≥1 month.
• Rumination is not due to medical conditions (e.g., GERD) or other eating disorders.
• Rumination onset: often infancy (3-12 months), but can occur at any age.
• Both disorders require symptoms to be clinically significant if co-occurring with other conditions (e.g., ASD, pregnancy).