Anaphylaxis presents in children with rapid involvement of typically 2 or more organ systems including cutaneous, gastrointestinal, and respiratory. Caustic ingestions (CI) may also present with acute involvement of cutaneous, gastrointestinal, and respiratory systems. We present 2 cases of "missed diagnosis" that illustrate how CI presenting with respiratory symptoms can be mistaken for anaphylaxis owing to these similarities. Both of these patients had delay in appropriate care for CI as a result. These cases demonstrate the importance of considering CI in children who have gastrointestinal symptoms, respiratory distress, and oropharyngeal edema.Anaphylaxis presents with a combination of gastrointestinal, cardiovascular, respiratory, and cutaneous symptoms. 1 The estimated incidence of pediatric anaphylaxis is ∼1 per 1000 children per year. 2 Caustic ingestions (CI) also present with respiratory distress, vomiting, and oral edema. The incidence of CI is lower, at ∼1 per 100 000 children per year. 3 Many CI cases are accidental; bleach, disinfectants, and laundry detergents are the most common agents. 4 We report 2 children misdiagnosed with anaphylaxis after unrecognized CI.
CASE DESCRIPTIONS Patient APatient A was a 5-year-old boy who had asthma and eczema who presented with coughing and lip and tongue swelling immediately after eating dinner. Over the following 4 to 6 hours, he developed vomiting, drooling, and audible wheezing. His mother called emergency medical services and reported that he was having trouble breathing. Initial emergency department (ED) examination revealed respiratory distress, stridor at rest, drooling, and an oxygen saturation of 89% by pulse oximetry. In the ED, neck films revealed minimal tracheal narrowing and epiglottal thickening. He was given dexamethasone, diphenhydramine, and nebulized racemic epinephrine without improvement. His respiratory status worsened, requiring intubation. A swollen glottis was noted during the procedure.He was transferred to our tertiary care hospital for intensive care management. Because of his atopic medical history and presentation, he was tentatively diagnosed with refractory anaphylaxis and given diphenhydramine and intramuscular (IM) epinephrine. Examination revealed tongue edema and evidence of stomatitis, atypical for anaphylaxis but concerning for infection or trauma. His mother denied awareness of chemical ingestions or recent fever. A rapid screen for group A b-hemolytic Streptococcus was positive. A diagnostic evaluation for allergic reaction returned a negative tryptase level and negative serum-specific