Skin and soft tissue infections caused by nontuberculous mycobacteria are increasing in incidence. The nontuberculous mycobacteria are environmental, acid-fast bacilli that cause cutaneous infections primarily after trauma, surgery and cosmetic procedures. Skin findings include abscesses, sporotrichoid nodules or ulcers, but also less distinctive signs. Important species include Mycobacterium marinum and the rapidly growing mycobacterium: M. fortuitum, M. abscessus and M. chelonae. Obtaining tissue for mycobacterial culture and histopathology aids diagnosis. Optimal therapy is not well-established, but is species-dependent and generally dictated by susceptibility studies. Management often includes use of multiple antibiotics for several months and potential use of adjunctive surgery.
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