A Child Is Brought to the Clinic with a Generalized

A child is brought to the clinic with a generalized, annular rash characterized by raised wheals with pale centers. On physical examination, the child's lungs are clear and there is no peripheral edema. A history reveals ingestion of strawberries earlier in the day. What is the initial treatment?

A) Aqueous epinephrine 1:1000 subcutaneously
B) Cetirizine once in clinic and then once daily for 2 weeks
C) Diphenhydramine 0.5 to 1 mg/kg/dose every 4 to 6 hours
D) Prednisone 1 to 2 mg/kg/day for 1 week with rapid taper