Equine gastric ulcer syndrome in foals

Summary Equine gastric ulcer syndrome (EGUS) in foals comprises equine squamous gastric disease (ESGD), equine glandular gastric disease (EGGD) and gastroduodenal ulcer disease (GDUD). While there are some similarities between ESGD and EGGD in foals compared to adult horses, there are also important age‐related differences that must be considered, and recognition that GDUD is a unique disease entity of the foal. In this review, the current understanding of epidemiology, pathogenesis, clinical presentations, comorbidities, diagnosis, treatment, prognosis and prevention of ESGD, EGGD and GDUD in foals is evaluated and compared. While EGUS is a common condition of the foal, with substantial implications on foal health and welfare, peer‐reviewed original research is limited. This article aims to provide clinicians with a contemporary perspective on EGUS in foals and provide an accessible summary of practical approaches to diagnosis, treatment and prevention of these conditions, in both a field and hospital setting.