An 11-year-old boy developed a rash around his mouth after eating eggs. He was treated with hydrocortisone cream. He was taken to his physician and his parents asked if he might be allergic to eggs. A RAST test for eggs was ordered and the result is 1+ (very low). His parents are informed that he was not allergic to eggs.
His parents fed him some scrambled eggs two days later and he immediately developed hives and wheezing. He was treated with diphenhydramine, subcutaneous epinephrine, and albuterol in an emergency department, where his parents were informed that he is probably allergic to eggs. Is the patient possibly allergic to eggs? What can be the reason of contradictory diagnoses? *This case is from Docplexus Editorial Team for educative purpose only.
