Spectrum: Local Antimicrobial Stewardship, for Markham Stouffville Hospital

Ecthyma

Characteristics

Punched-out ulcers covered with yellow crust surrounded by raised violaceous margins

Common Pathogens

Streptococcus pyogenes
(Group A β-hemolytic streptococci)
(More Common)

Staphyloccocus aureus

Empiric Regimen of Choice

Cephalexin x 7 days

Cephalexin Dosing

β-Lactam Anaphylaxis or MRSA Suspected

Clindamycin

Clindamycin Dosing

OR

Sulfamethoxazole-Trimethoprim (SMX-TMP)
*Preferred for MRSA

SMX-TMP Dosing