Beyond Classification: A Unique Case of Self‐Resolving Cutaneous Mucinosis Associated With Streptococcal Infection in a Child

Abstract

A 3‐year‐old boy presented with an unusual combination of indurated skin, sclerotic plaques with lichenification, and yellowish papules. Histopathology revealed diffuse dermal mucin deposits, and laboratory tests showed a positive throat culture for Group A streptococcus and elevated serum anti‐streptolysin titers. An 10‐day course of oral amoxicillin was associated with near‐complete resolution of all dermatological findings within 4 months. This case represents a unique presentation of a self‐resolving cutaneous mucinosis, likely associated with a streptococcal infection.