[m82_ghasemi]

I'll go for D, Prednisone for the long run and diphenhydramine acutely. Choice E would be good but the effects wouldn't be acute. D > E.

I dropped Choice C because PCN most likely will cross react w/ the already in-place Cephalosporin allergy. Sometimes it can take days for there to be enough lvls of a Cephalo or PCN to act like a hapten & cause allergy (actually any medication)

Erythromycin and Aspirin... hmm, dont even know what we would accomplish by giving the kid that... he already was on 8 days of ab.

This is an allergy response to the drug, which is an anti-altered-self response generated by T and B lymphocytes and production of IgE antibodies. The drug can act as hapten. Typically an allergic response occurs 7 to 14 days following exposure. Therefore, D is correct which is the best choice for controlling the condition.[FONT=&quot][/FONT]