%0 Case Reports %T Drug Reaction With Eosinophilia and Systemic Symptoms Syndrome Preceding Toxic Epidermal Necrolysis Secondary to Sildenafil: A Case Report. %A Walterscheid B %A Batchinsky M %A Tarbox M %J Cureus %V 16 %N 7 %D 2024 Jul %M 39104984 暂无%R 10.7759/cureus.63922 %X Drug reactions with eosinophilia and systemic symptoms (DRESS) syndrome and Stevens-Johnson syndrome-toxic epidermal necrolysis (SJS-TEN) are reactive entities of aberrant cytotoxic immunologic reactions to exogenous medications. While they are conventionally seen as distinct, separate conditions, we present a case of a rare evolution of DRESS syndrome into SJS-TEN in the setting of simultaneous amoxicillin-clavulanate initiation and long-term sildenafil use in a 66-year-old South Asian female with a known history of prior DRESS syndrome and pulmonary arterial hypertension. We discuss the conditions leading to her unique clinical presentation and provide considerations for future clinical encounters.