Equine Chronic Diarrhea and Granulomatous Enteritis – NAVLE Study Guide
Overview and Clinical Importance
Chronic diarrhea in horses, defined as diarrhea persisting longer than one month, represents a significant diagnostic and therapeutic challenge. Unlike acute diarrhea, chronic cases often involve inflammatory or infiltrative bowel diseases rather than infectious etiologies. Granulomatous enteritis (GE) is one of several idiopathic inflammatory bowel diseases (IBD) affecting horses, characterized by macrophage and epithelioid cell infiltration of the intestinal wall.
Understanding the differential diagnosis, diagnostic approach, and management of chronic diarrhea is essential for NAVLE success, as these conditions require systematic clinical reasoning and integration of multiple diagnostic modalities.
Definition and Classification of Chronic Diarrhea
Chronic diarrhea is defined as loose or watery feces persisting for greater than 1 month. The causes differ substantially from acute diarrhea, which is typically infectious. Chronic diarrhea results from inflammatory, infiltrative, or neoplastic conditions, or from disruption of normal intestinal physiology.
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