[Nontuberculous mycobacteria]

Area of Science:

• Microbiology
• Dermatology
• Infectious Diseases

Background:

• Nontuberculous mycobacteria (NTM), including Mycobacterium marinum, Mycobacterium ulcerans, and rapidly growing mycobacteria (RGM), are environmental pathogens with dermatologic relevance.
• Diagnosis of NTM infections is often challenging, with immune-competent individuals typically experiencing localized infections and immune-suppressed patients facing severe, disseminated disease.

Purpose of the Study:

• To review the clinical presentation, diagnostic approaches, and particularly the antibiotic treatment options for skin infections caused by dermatologically relevant NTM.
• To emphasize the importance of early diagnosis and treatment, especially for aggressive infections like those caused by Mycobacterium ulcerans.

Main Methods:

• Review of clinical presentations of NTM skin infections.
• Discussion of diagnostic workup procedures for NTM.
• Detailed examination of antibiotic treatment strategies, including combination therapy and surgical considerations.

Main Results:

• NTM infections present with diverse clinical manifestations, ranging from localized to disseminated disease.
• Effective management necessitates prompt diagnosis and often involves a combination of antimicrobial agents due to the risk of inducible antibiotic resistance.
• Surgical intervention may be a necessary component of treatment for certain NTM infections.

Conclusions:

• Dermatologically relevant NTM infections require a thorough understanding of clinical presentation and diagnostic challenges.
• Combination antibiotic therapy, initiated early, is the cornerstone of NTM treatment, with surgical options considered when appropriate.
• Prompt and accurate management is vital, particularly for severe cases and infections caused by virulent species like Mycobacterium ulcerans.