06-18-2007, 09:48 PM
20. A 47-year-old woman comes to the physician because of a 2-day history of fever and joint pain. Six days ago, she completed a 10-day course of dicloxacillin for folliculitis. She appears comfortable. Her temperature is 38.6°C (101.5°F), pulse is 72/min and regular, respirations are 16/min, and blood pressure is 120/76 mm Hg. Examination shows an urticarial rash over the trunk and extremities. There is moderate generalized lymphadenopathy and diffuse joint tenderness. The remainder of the examination shows no abnormalities. Which of the following is the most likely cause of these symptoms?
A
) Epstein-Barr virus infection
B
) IgE-mediated allergic reaction
C
) Mycobacterium haemophilum infection
D
) Serum sickness
E
) Staphylococcal sepsis
A
) Epstein-Barr virus infection
B
) IgE-mediated allergic reaction
C
) Mycobacterium haemophilum infection
D
) Serum sickness
E
) Staphylococcal sepsis