Investigations
- Nasal swab to check for staphylococcal carriage
- Swab of pus will typically show S. aureus; sensitivities may be helpful to guide treatment. Other potentially causative bacteria include Pseudomonas aeruginosa or other Gram negative organisms.
- A biopsy is rarely indicated for refractory or atypical disease. Fungal/yeast infection is sometimes found mimicking bacterial infection (and should be treated accordingly).
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