• Hehe Bai, Xiaodong Wang, Yuanji Wang, Yanhong Li, Weiyan Guo, Juan Lv, Yamei Li, Zhaoqin Hao, and Xiaoyan Pan.
• Department of Pharmacy, Xi'an Central Hospital, Xi'an, PR China.
• Medicine (Baltimore). 2024 Feb 2; 103 (5): e37164e37164.

RationaleOrnidazole is a synthetic nitroimidazole derivative that is commonly prescribed for antiparasitic or anti-anaerobic infections. It is generally well tolerated, with known side effects including gastrointestinal tract, anaphylaxis, and central nervous system reactions. Ornidazole-induced binocular reactive keratitis and several mucocutaneous lesions have been rarely reported.Patient ConcernsA 52-year-old woman who suffered from vaginitis and received an ornidazole vaginal plug (0.5 g). Approximately 20 minutes after the suppository was inserted into the vagina, her lips were swollen and valva and labia were burning. Her eyes were red, sore, and watery.DiagnosisShe was diagnosed as Steven-Johnson syndrome by the ophthalmologist. According to the Naranjo scale, the adverse drug reaction was evaluated to be probable and severe.InterventionsDexamethasone was intravenous administrated as anti-inflammatory therapy for 10 days. Eye drops were locally given to relieve edema and promote healing of the epithelium. The symptoms of her eyes, lips, vulva and crissum were soon relieved.OutcomesThe patient was discharge from hospital with improved symptoms.LessonsIn order to avoid severe adverse effect, the patient should not use metronidazole ether orally or vaginally. The case emphasized the importance of rapid and accurate diagnosis of Steven-Johnson syndrome induced by ornidazole vaginal plug, especially when the eye symptoms were the chief complaint without body skin involved.Copyright © 2024 the Author(s). Published by Wolters Kluwer Health, Inc.

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