03-20-2007, 03:26 PM
A patient with rheumatic fever develops a sore throat from which beta-hemolytic streptococci are cultured. The patient is started on treatment with penicillin, and the sore throat resolves within several days. However, 7 days after initiation of penicillin therapy the patient develops a fever of 103°F, a generalized rash, and proteinuria. This MOST probably resulted from
A. recurrence of the rheumatic fever.
B. a different infectious disease.
C. an IgE response to penicillin.
D. an IgG-IgM response to penicillin.
E. a delayed hypersensitivity reaction to penicillin.
A. recurrence of the rheumatic fever.
B. a different infectious disease.
C. an IgE response to penicillin.
D. an IgG-IgM response to penicillin.
E. a delayed hypersensitivity reaction to penicillin.