Snapshot A 7-year-old girl is brought in by her parents for poor weight gain and recurrent diarrhea. They have tried eliminating dairy from her diet with no improvement in symptoms. She reports 3-5 loose stools per day for the last 6 months. The condition improves when she fasts and is usually worse when she eats fast food like pizza. On exam, you notice several excoriated areas on the girls arms which she states are very itchy. Introduction Overview login to view 3 more bullets Epidemiology login to view 3 more bullets Pathogenesis login to view 5 more bullets Genetics login to view 3 more bullets Associated conditions login to view 1 more bullet Presentation Symptoms login to view 10 more bullets Physical exam login to view 7 more bullets Imaging Dual energy X-ray absorptiometry (DEXA) login to view 1 more bullet Studies Serum labs login to view 10 more bullets Invasive studies login to view 9 more bullets Differential Tropical sprue login to view 2 more bullets Inflammatory bowel disease login to view 2 more bullets Irritable bowel syndrome login to view 2 more bullets Treatment Lifestyle modifications login to view 4 more bullets Medical treatment login to view 4 more bullets Complications Iron deficiency anemia Osteoporosis Infertility Neurological problems (secondary to malabsorption) Intestinal lymphoma login to view 1 more bullet