Background:

Atypical Steven-Johnson syndrome is a rare disease that can be caused by Mycoplasma pneumoniae; it is characterized by respiratory symptoms, mucosal lesions of variable severity and constitutional symptoms, in the absence of cutaneous involvement.

Case report:

We present the case of a 35-old-man who developed mucositis in the conjunctiva, oral cavity and genitalia after the onset of respiratory symptoms. Mycoplasma pneumoniae infection was confirmed, and treatment with antibiotic and steroids was therefore started, whereby clinical manifestations subsided.

Conclusions:

Mycoplasma pneumoniae-induced atypical Steven-Johnson syndrome diagnosis can be challenging. The differential diagnosis of fever and oral, genital and conjunctival mucositis associated with respiratory symptoms should include infection with this bacteria in order to provide accurate and timely treatment.

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