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Perianal dermatitis caused by Group A beta-hemolytic streptococcus has been recognized in children, in particular boys between the ages of 7 months and 11 years. Children typically present with a history of perianal itching, constipation, or pain with defecation. Clinical examination often shows well-demarcated perianal erythema and occasionally fissures, exudate, and a mucopurulent discharge. These authors describe four cases of perianal streptococcal dermatitis in adults.
Three of the four patients had a history of perianal itching for 2 to 3 months. All four patients had bright red perianal erythema, and three had satellite papules and pustules. One patient had been treated for presumptive candidiasis, contact dermatitis, and psoriasis. A…