A 2-year-old boy is brought to the physician by his mother for a 3-day history of worsening redness on his left hand. She cannot recall any specific trauma or incident that precipitated the lesion. Physical examination demonstrates erythema and desquamation along the dorsomedial aspect of the right hand. Temperature is 99.5 F. Which of the following is the most appropriate initial pharmacotherapy?
A) Amoxicillin
B) Ceftriaxone
C) Flucloxacillin
D) Gentamicin
E) Vancomycin
