Immersion Foot Syndrome in 6 Equids Exposed to Hurricane Floodwaters.

This research paper presents a study detailing the pathological findings of a condition resembling human ‘immersion foot syndrome’ in 5 horses and 1 donkey, all of which had prolonged exposure to floodwaters during Hurricane Harvey. Immersion foot syndrome is typically characterized by skin damage from staying in damp conditions for a prolonged period, resulting in the death of some skin cells due to lack of blood flow.

Pathological Findings

• The research paper makes a detailed account of the post-mortem findings in the horses and the donkey exposed to floodwater for an extended period.
• All animals had skin defects under a sharply defined ‘water line’ along the lateral trunk. These findings present similarities to the immersion foot syndrome seen in humans, a condition usually reported in soldiers during World War I due to prolonged exposure in damp conditions.
• Upon microscopic examination, five of the animals showed signs of moderate to severe inflammation around the blood vessels in their skin, along with blood vessel inflammation and cell death tied to reduced blood supply, a symptom consistent with ischemia.

Course and Severity of the Disease

• The study found that the severity of the lesions, or skin damage, followed a pattern progressing from the ventral trunk or underside of the animal outward to the limbs, becoming more severe in chronic cases.

Understanding the Disease

• The cause of immersion foot syndrome is multifaceted, stemming from alterations in the skin’s tiny blood vessels leading to clot formation and reduced blood flow, resulting in tissue death or necrosis due to lack of blood supply.
• The research highlights the importance of prompt recognition and appropriate management of this condition to reduce suffering and disease progression.
• As the condition mirrors the effects of prolonged exposure to water in humans, managing and treating the condition in horses and donkeys may follow similar lines of attack, although this research didn’t go on to discuss potential treatments for the condition.