In Part 1 of this Episode on Pediatric Abdominal Pain, Dr. Anna Jarvis, "the mother of pediatric emergency medicine" & Dr. Stephen Freedman, one of the world's pre-eminent pediatric EM researchers, discuss the nuances of the history, physical and work up of Pediatric Abdominal Pain & Appendicitis and key pearls on how to distinguish serious surgical causes from the very common diagnosis of gastroenteritis. An in-depth discussion on the pearls of the history, physical exam, lab tests, imaging including serial ultrasounds vs CT abdomen, clinical decision rules such as the Alvarado Score, best analgesics and antibiotics in pediatric appendicitis follows.