This case concerns a boy presenting with oral pain and multiple mucocutaneous lesions such as mucositis, conjunctivitis, and a rash on the trunk, extremities, and genitalia. The presence of mild respiratory complaints raised suspicion of an extrapulmonary manifestation of Mycoplasma pneumoniae, known as Mycoplasma pneumoniae-induced Rash and Mucositis (MIRM). The patient underwent conservative treatment and was monitored to prevent chronic sequels such as ocular damage or sicca keratoconjunctivits.