Erythematous rash and postinfectious acral desquamation due to Streptococcus dysgalactiae subspecies equisimilis infection in a child.

Streptococcus dysgalactiae subspecies equisimilis infection is an emerging pathogen. Cutaneous and systemic manifestations resemble those of other pyogenic streptococci. However, the rapid group A antigen detection test used to diagnose Streptococcus pyogenes infection is usually negative, making the diagnosis difficult.