Aaron's sign

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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 diagnosisAppendicitis

Aaron's sign is a referred pain felt in the epigastrium upon continuous firm pressure over McBurney's point.[1] It is a 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.[2]

Aaron's sign is named for Charles Dettie Aaron, an American gastroenterologist.[3]


  1. Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health (7th ed.). 2003.
  2. Iqbal, Subhan. "Aaron sign | Radiology Reference Article | Radiopaedia.org". Radiopaedia. Archived from the original on 2022-07-25. Retrieved 2022-07-25.
  3. "Who Named It?". Archived from the original on 2017-07-21. Retrieved 2023-05-06.

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