A case of Mycoplasma pneumoniae-induced rash and mucositis with recent influenza vaccination.

A 33-year-old female presented with coryzal symptoms, facial swelling, severe haemorrhagic stomatitis, blistering oral mucositis, conjunctival injection and a sparse targetoid rash on the back and face, requiring admission to hospital. She had received the seasonal influenza vaccination 3 days prior to feeling unwell. Differential diagnosis included erythema multiforme major (EMM) secondary to the influenza vaccine or Mycoplasma pneumoniae-induced rash and mucositis (MIRM).