Test your diagnostic skills in our regular dermatology quiz. What is the cause of this erythematous pustular rash in a young woman who is febrile and unwell?
A 29-year-old woman presents to the emergency department after a pre-syncopal episode that occurred while she was showering. She has been unwell for approximately two weeks with a flu-like illness that has progressed to a cough. She developed a rash approximately one week before her presentation. The rash has become erythematous and confluent across her torso and limbs (Figure 1a). The erythema is studded with small pustules.