Ecthyma | Figure 4.10 A: Perianal strep (Reprint from Al-Jasser M, Al-Khenaizan S. Cutaneous mimickers of child abuse. Eur J Ped. 2008; 167 (11) : 1221–30) B: Ecthyma (Courtesy of Dr. Paul Getz) C: Strawberry tongue (Reprint from Allen HB. Dermatology Terminology. New York, NY: Springer; 2010) |
(Figure 4.10B) - Deeper form of nonbullous impetigo with ulceration due to GAS but quickly contaminated by S.aureus
- Presents as “punched out” shallow ulcer with thick, yellow-gray crust commonly in lower legs of children
- If diagnosis uncertain → punch biopsy with deep-tissue Gram stain and culture
- Treatment: dicloxacillin or first-generation cephalosporin
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