This casebook provides a concise yet comprehensive state-of-the art review of common stomach and small intestine disorders. The casebook is divided into five parts, each of which focuses on a major disorder, symptom, or clinical scenario related to the stomach and small intestine, including dyspepsia, small bowel disorders, nausea and vomiting, chronic abdominal pain, and post-operative GI surgery challenges. Each part is comprised of cases illustrating different aspects of the subject, with each case containing sections on case presentation, objectives, epidemiology and etiology, diagnostic evaluation and treatment, case follow-up, clinical pearls, and Q&A. Some major topics presented in these cases include nausea and vomiting in the pregnant patient, gas-bloat, functional abdominal pain, post-GI surgery complications, and celiac disease and non-celiac gluten sensitivity. Written by internationally renowned experts in the field, Essential Medical Disorders of the Stomach and Small Intestine: A Clinical Casebook is a valuable resource for clinicians and practitioners who treat patients afflicted with disorders of the stomach and small intestine.