This document defines and describes malabsorption syndrome, which occurs when the small intestines fail to absorb nutrients from digested food. It is caused by various intestinal disorders that disrupt digestion and absorption. Symptoms include fatty stool, weight loss, abdominal discomfort, and deficiencies of specific vitamins and minerals. Diagnosis involves stool and biopsy tests and imaging. Treatment focuses on addressing the underlying cause, replacing deficiencies, and managing symptoms like fatty stool. Diet modifications and supplements are often needed long-term.