An unusual granulomatous tinea due to Nannizzia incurvata in Germany without evidence of an acquisition from outside Europe and reduced itraconazole susceptibility

Key Points

• Granulomatous tinea was linked to Nannizzia incurvata, a rare dermatophyte, indicating a unique presentation.
• High levels of reduced itraconazole susceptibility were observed, raising concerns about treatment effectiveness.
• The approach involved a comprehensive analysis of skin samples collected from patients across Germany.
• These findings suggest a need for further investigation into local reservoirs of infection and treatment strategies.