Prolonged exposure to water, known as immersion foot syndrome in humans, is a phenomenon first described in soldiers during World War I and characterized by dermal ischemic necrosis. In this report, we describe the pathologic findings of a condition resembling immersion foot syndrome in 5 horses and 1 donkey with prolonged floodwater exposure during Hurricane Harvey. At necropsy, all animals had dermal defects ventral to a sharply demarcated "water line" along the lateral trunk. In 5 animals, histologic examination revealed moderate to severe perivascular dermatitis with vasculitis and coagulative necrosis consistent with ischemia. The severity of the lesions progressed from ventral trunk to distal limbs and became more pronounced in the chronic cases. The pathophysiology of immersion foot syndrome is multifactorial and results from changes in the dermal microvasculature leading to thrombosis and ischemia. Prompt recognition of this disease may lead to appropriate patient management and decreased morbidity.

中文翻译：

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浸入飓风洪水中的6个足部浸水综合症。

长时间接触水，在人类中被称为“浸足综合征”，是一战期间首次在士兵中描述的现象，其特征是皮肤缺血性坏死。在本报告中，我们描述了在5匹马和1头驴中出现浸入足综合征的病状，在哈维飓风期间长期暴露于洪水中。尸检时，所有动物的腹侧都有真皮缺陷，腹侧有明显划界的“水线”。在5只动物中，组织学检查显示中度至重度血管周围皮炎伴血管炎和与缺血一致的凝集性坏死。病变的严重程度从腹主干发展到四肢远端，在慢性病例中更为明显。浸入足综合征的病理生理是多因素的，是由于皮肤微脉管系统的变化导致血栓形成和局部缺血引起的。对这种疾病的迅速认识可能导致适当的患者管理并降低发病率。