13th June 2024

A 20-year-old lady presents to her GP with a facial rash that appeared 2 days ago. It is erythematous

A 20-year-old lady presents to her GP with a facial rash that appeared 2 days ago. It is erythematous and is on both malar eminences. There is no hyperesthesia, no vesicles, and no pustules. Observations are all normal. CRP and WBC counts are normal. Blood culture and skin swab cultures are negative. A few days before the rash, she had symptoms of runny nose and mild fever that had resolved. What is the causative organism in this case?

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