Mahmood Nuha, Pinheiro Alves Alana, Melgar Thomas A
Internal Medicine, Western Michigan University Homer Stryker M.D. School of Medicine, Kalamazoo, USA.
Infectious Disease, Henry Ford Health, Detroit, USA.
Cureus. 2025 Jun 17;17(6):e86243. doi: 10.7759/cureus.86243. eCollection 2025 Jun.
Erythema ab igne (EAI) is a rare skin reaction caused by prolonged exposure to low-level heat, resulting in a reticular pattern of localized erythema and hyperpigmentation. This condition carries a potential risk of transformation into cutaneous malignancy. We present the case of a 38-year-old woman who developed a reticular-patterned rash on her abdomen. She had been using hot water bags to alleviate severe abdominal pain associated with chronic cholecystitis, which led to the development of hyperpigmented, mottled, erythematous skin changes across her entire abdomen. After discontinuing heat application, her hyperpigmentation significantly decreased, although the skin changes persisted years later.
火激红斑（EAI）是一种罕见的皮肤反应，由长期暴露于低水平热量引起，导致局部红斑和色素沉着呈网状分布。这种情况有转化为皮肤恶性肿瘤的潜在风险。我们报告一例38岁女性病例，该患者腹部出现网状皮疹。她一直在使用热水袋缓解与慢性胆囊炎相关的严重腹痛，这导致她整个腹部出现色素沉着、斑驳、红斑性皮肤改变。停止热敷后，她的色素沉着明显减轻，尽管多年后皮肤改变仍持续存在。
