This podcast is part of a two part series on an approach to the diagnosis and management of diarrhea in children. Part 1 gives an overview of the pathophysiology of diarrhea and an approach to acute diarrhea. This podcast was developed by Katie Girgulis a medical student at the University of Alberta, Dr. Chris Novak, a pediatric resident at the University of Alberta, and Dr. Karen Forbes, a pediatrician and medical educator at the Stollery Children's Hospital