Management of Fluconazole-Refractory Fungal Rash
Clinical Reasoning
- The Infectious Diseases Society of America recommends itraconazole solution 200 mg once daily or posaconazole suspension 400 mg twice daily for 3 days then 400 mg daily for up to 28 days for fluconazole-refractory fungal rash, with strong recommendations and moderate-quality evidence 1, 2, 3
- For patients who cannot tolerate first-line options, voriconazole 200 mg twice daily or amphotericin B deoxycholate oral suspension 100 mg/mL four times daily can be considered as alternative treatments 1, 2, 3
Severe or Systemic Disease Considerations
- In cases of severe or systemic disease, intravenous echinocandin (caspofungin 70 mg loading dose then 50 mg daily, micafungin 100 mg daily, or anidulafungin 200 mg loading dose then 100 mg daily) or intravenous amphotericin B deoxycholate 0.3 mg/kg daily can be used 1, 2, 3
Critical Diagnostic Steps
- Obtaining fungal culture and susceptibility testing is crucial to identify the specific organism and resistance patterns, and to guide treatment decisions 1, 2, 3
- The Infectious Diseases Society of America recommends considering fluconazole-resistant species, such as C. glabrata and C. krusei, which require different management strategies 1, 2, 3, 4