Incision and drainage, and send for culture
Once culture is back: refine therapy
PLUS
Vancomycin as per order set 10-111-5335: Initiation of Vancomycin for Adult Inpatients
Cloxacillin 2 g IV q6h x 5-10 days
Step down to oral therapy once stable
OR
Cefazolin 2 g IV q8h x 5-10 days