From:  Diagnosing cow’s milk allergy with the EATERS-X allergy-focused clinical history

 Scenario 3: non-IgE CMA in a formula-fed infant.

EATERS-X abbreviationInformation from the history taking
E (Environment)6-week-old formula-fed infant.
A (Allergen)Cow’s milk protein in infant formula.
T (Timing)Increasing symptoms over several weeks.
E (Exposure)Oral exposure by formula feed.
R (Reproducibility)Symptoms improved with a change to an extensively hydrolysed formula (EHF) and returned when the CM formula was reintroduced 4 weeks later as a therapeutic trial.
S (Symptoms)Persistent vomiting after feeds, unsettled, poor sleep, unable to be laid flat, loose, frequent stools, and atopic dermatitis.
X (Extra/Rx)Primary care prescribed EHF and monitored improvement of symptoms, undertaking a reintroduction 4 weeks later to confirm the diagnosis.

CMA: cow’s milk allergy.