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Educational draft · awaiting clinical reviewUse Rapid for revision, not patient-care decisions. Check current national and local guidance and the BNF or BNFC before acting.

Avoidant restrictive food-intake disorder

Psychiatry · UK scope · Sources checked 27 Aug 2026 · Clinical review pending

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ARFID with acute intake failure

Rapid restriction of food or fluid, syncope, hypoglycaemia, severe dehydration, electrolyte disturbance, faltering growth, profound weakness or acute psychiatric deterioration can make ARFID a medical emergency at any body weight.

Action: Assess ABCDE and glucose, hydration, postural observations, growth or weight trajectory, ECG indications and urgent bloods. Seek senior paediatric or adult medical and eating-disorder advice, admit when stabilisation or monitored nutrition is unsafe in the community, and plan refeeding risk rather than using the absence of weight-shape concern as reassurance.

Synopsis

Recognise ARFID across ages and body sizes, distinguish its sensory, fear and low-interest drivers from weight-shape disorders and medical mimics, and coordinate nutritional and psychological care.

  • ARFID is avoidance or restriction severe enough to impair physical health, nutrition, growth, supplement dependence or everyday functioning, without weight or shape beliefs driving the restriction.
  • Common maintaining profiles are sensory sensitivity, fear of aversive consequences such as choking or vomiting, and low appetite or low interest in eating; more than one can coexist.
  • ARFID occurs in children and adults, at any weight, and may coexist with autism, ADHD, anxiety, gastrointestinal disease or previous frightening feeding experiences.
  • It is more than ordinary selective eating: establish nutritional adequacy, growth, medical consequences, distress and interference with school, work, travel and relationships.
  • Assessment needs a diet and supplement history, growth or weight trajectory, physical examination, targeted bloods and consideration of swallowing, gastrointestinal, allergy and metabolic causes.
  • Treatment is formulation-led and multidisciplinary, combining medical monitoring, specialist dietetics, environmental or sensory adjustment and psychological or behavioural work.
  • Exposure should be collaborative, graded and nutritionally safe; abruptly removing all accepted foods or coercive confrontation can worsen fear and intake.
  • No medicine treats ARFID itself, although carefully selected treatment for comorbid anxiety, nausea or another condition may support the wider plan.

Key red flags

Sudden refusal after choking, vomiting or another feared event may progress quickly to dehydration and requires urgent assessment rather than routine exposure advice.

Crossing weight or height centiles, delayed puberty, micronutrient deficiency, dependence on supplements or tube feeding, and major psychosocial interference all signify clinical impact.

Normal or high weight does not exclude a dangerously narrow diet, vitamin deficiency or rapid loss from a higher baseline.

Dysphagia, painful swallowing, persistent vomiting, gastrointestinal bleeding, focal neurology or systemic illness requires investigation for an organic cause.

Suicidal intent, self-harm, severe anxiety or family exhaustion that makes nutrition impossible needs same-day multidisciplinary support.

Investigation priorities

01
Dietary quantity and variety assessmentFirst step

Estimate energy, protein, micronutrient, fluid and supplement exposure across ordinary and difficult days.

Management branches

RecognitionEstablish impact and mechanism

Food quantity or variety is restricted beyond ordinary preference or developmental selectivity.

  1. Ask about accepted foods, intake, supplements, growth, medical effects and disruption to daily life.
  2. Clarify sensory sensitivity, feared consequences and appetite while assessing weight-shape motivation and alternative diagnoses.
  3. Refer to an age-appropriate service able to integrate medical, dietetic and psychological assessment when ARFID is suspected.
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Sources and review status4 sources · checked 27 Aug 2026 · clinical review pending+
Sources

Sources and review status

National guidance is shown before implementation-dependent detail. Apply principles in context and verify current guidance when a decision affects care. Source check completed 27 Aug 2026; clinical approval remains outstanding.

  • NHS inform ARFIDUpdated July 2026; recognition, treatment and complications.
  • CNTW NHS ARFID supportReviewed February 2026; mechanisms and urgent deterioration.
  • NICE NG69 eating disorders recommendationsAssessment, referral and physical-risk principles across eating disorders.
  • RCPsych CR233 Medical Emergencies in Eating DisordersARFID-inclusive all-age emergency framework and refeeding safety.

Editorial contact: Doctor’s Passport editorial team. Source-check date is separate from clinical approval. Report a content problem · Content changes

Authoring stateRapid draftClinical stateAwaiting reviewJurisdictionUnited Kingdom