Mucocutaneous diseases associated with systemic symptoms are varied. Since 2014, mucocutaneous syndromes, associated with atypical bacterial infections, have been described as specific entities. Most of them by Mycoplasma pneumoniae and up to 10 percent by Chlamydophila pneumoniae. Differential diagnosis is important because it has clinical implications. We present the case of a 24-year-old patient with extensive mucosal and respiratory compromise, compatible with mucosal respiratory syndrome due to Chlamydophila pneumoniae. Initially managed with NSAIDs, which made it difficult to differentiate from other syndromes with mucocutaneous involvement, which are caused by these drugs. We present the case because of how interesting and challenging the differential diagnosis was.