BACKGROUND Erythema nodosum leprosum (ENL) is an immunologically mediated phenomenon complicating the course of leprosy. Reverse Koebner phenomenon is the term used to describe the sparing of previously injured or diseased skin by new skin lesions of the disease. METHODS A middle-aged woman with a known case of lepromatous leprosy for the past year presented with an eruption of reddish painful nodules over her body. The lesions were found to characteristically spare the sites of previous scars. RESULTS This sparing phenomenon of previous scar sites has been termed reverse Koebner phenomenon, a site of the body that offers greater resistance than the rest of the body to the onset of the disease, seen in various diseases, but it has never been described in ENL. CONCLUSION This sparing of scar sites in ENL can be attributed to reverse Koebner phenomenon.

中文翻译：

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逆转麻风结节性红斑的 Koebner 现象。

背景技术麻风结节性红斑(ENL)是一种免疫介导的现象，使麻风病的病程复杂化。逆科布纳现象是一个术语，用于描述疾病的新皮肤病变能够保护先前受伤或患病的皮肤。方法 一名中年妇女在过去的一年中患有麻风病，她的身体出现了微红色疼痛的结节。发现这些损伤的特点是没有保留以前疤痕的部位。结果这种保留先前疤痕部位的现象被称为反向科布纳现象，该现象是身体的一个部位，比身体其他部位对疾病的发作具有更强的抵抗力，这种现象见于各种疾病，但 ENL 中从未对此进行过描述。 。结论 ENL 中疤痕部位的保留可归因于反向 Koebner 现象。