Primary Axillary Actinomycosis: A Case Report on the Integration of Culture and Molecular Diagnostics for Accurate Diagnosis of Polymicrobial Infections.

ABSTRACT: Actinomycosis is a chronic suppurative granulomatous disease caused by Actinomyces spp. Although cutaneous actinomycosis is rare, dermatologists must consider it due to its potential coexistence with other pathogens, often as part of polymicrobial infections. We present a rare case of primary axillary cutaneous actinomycosis in a young woman, likely triggered by cosmetic axillary hair removal and home shaving practices. Histological examination revealed characteristics of actinomycosis, including sulfur granules and Gram-positive filamentous structures. Bacterial cultures failed to isolate Actinomyces, but identified Staphylococcus epidermidis, S. aureus (MRSA), and Corynebacterium simulans, suggesting a polymicrobial infection contributing to the inflamm

SUBMITTER: Tezuka J 

PROVIDER: S-EPMC11946627 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature