| Aaron's sign | |
|---|---|
 | |
| Location of McBurney's point (1), located two thirds the distance from the umbilicus (2) to the right anterior superior iliac spine (3). | |
| Differential diagnosis | Appendicitis |
Aaron's sign is a referred pain felt in the epigastrium upon continuous firm pressure over McBurney's point. It is one of the best known signs of appendicitis, although it is rarely referred to by its name. While the sign is well known, and taught in medical education, its efficacy has not been well established
Aaron's sign is named for Charles Dettie Aaron, an American gastroenterologist.