Infectious Disease Compendium

Impetigo

Diagnosis

A cellulitis that goes from vesicular to crusted.

Epidemiologic Risks

Person to person; mostly a disease of children.

Microbiology

Group A streptococcus with or without (mostly) S. aureus.

Empiric Therapy

Oral penicillin if streptococcal; cephalexin or dicloxacillin if mixed staph/strep. In this increasing era of MRSA, po doxycycline is more reliable where I live. Local millage will vary.

Topical Mupirocin also is effective.

Pearls

Rants

ICD9 Codes (Soon to be supplanted by ICD10)

Impetigo 684.