Carrie, 17, presents with painful genital ulcers.

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<p>Carrie, 17, presents with painful genital ulcers. These developed a week after she was diagnosed with community-acquired pneumonia after self-presenting to ED with fever, cough, malaise and dyspnoea.</p><p>She was treated empirically with five days of amoxycillin 1g TDS and doxycycline 100mg BD, with prompt resolution of the respiratory symptoms and fever. </p><p>Nasopharyngeal PCR swabs in the ED were positive for Mycoplasma pneumoniae.</p><p>Carrie is usually very well, takes no regular medications and has no allergies. She has never been sexually active, and there is no history of sexual abuse.</p>

Kate Kelso is a GP and medical editor at Australian Doctor.