Stevens-Johnson syndrome (SJS) is a rare condition, characterized by its dramatic involvement of the skin and various mucosal surfaces including the oral mucosae, that severely impairs the affected patient's ability to speak, chew, or swallow. The purpose of this report was to present two cases with significant variations in the clinical presentation of Stevens-Johnson syndrome. In both situations, the patients' conditions were not immediately recognized. Pediatric dentists should be aware of these variations in the clinical manifestations of SJS, as the signs and symptoms can initially mimic common viral conditions. Appropriate diagnosis can result in timely referral to a hospital environment, optimizing patient management and recovery.