Your appendix is on the lower right side of your abdomen. It’s a small, finger-shaped pouch that sticks out from the cecum, which is the very beginning of your large intestine, right where the small intestine connects to it. If you draw an imaginary line from your belly button down to your right hip bone, the appendix sits roughly one-third of the way along that line from the hip.
How to Find the Exact Spot
Doctors use a landmark called McBurney’s point to locate the appendix from the outside. To find it yourself, place one finger on your right hip bone (the bony point you can feel at the front) and another on your belly button. McBurney’s point sits about one-third of the way from the hip bone toward the belly button, typically 1.5 to 2 inches inward from the hip bone in adults. This is where tenderness concentrates when the appendix becomes inflamed.
That said, the appendix isn’t fixed in one rigid position inside the body. It can curl behind the cecum, hang down into the pelvis, or point in various directions. These normal variations explain why appendicitis pain doesn’t always show up in the textbook spot.
Why the Location Matters: Appendicitis Pain
Most people searching for the appendix’s location are worried about appendicitis, and pain location is one of the strongest early clues. The classic pattern starts with a vague ache around the belly button that migrates over 12 to 24 hours to the lower right abdomen. Once it settles there, the pain typically becomes sharper and more focused.
A few physical signs help confirm the location of the problem. Rebound tenderness means the pain gets worse when you press on the lower right abdomen and then quickly release. Pressing on the left lower abdomen can also trigger pain on the right side, a finding doctors call a positive Rovsing’s sign. Pain with certain leg movements, like straightening your right hip or rotating it inward, can point to an inflamed appendix sitting near those deeper muscles. None of these signs alone confirms the diagnosis, but together they build a clear picture.
Can Your Appendix Be on the Left Side?
In extremely rare cases, yes. A condition called situs inversus totalis causes all of the internal organs to be mirrored, placing the heart slightly to the right and the appendix on the lower left. This affects somewhere between 1 in 10,000 and 1 in 100,000 people. A related condition, midgut malrotation, can also shift the appendix to an unexpected position. People with these conditions sometimes don’t know about them until imaging is done for another reason, which can make diagnosing left-sided appendicitis tricky for both the patient and the doctor.
How Appendicitis Is Confirmed
Physical exams catch a lot, but imaging is often used to be sure. CT scans are the gold standard, with an accuracy rate of about 98% and the ability to give a definitive answer in roughly 97.5% of cases. Ultrasound is sometimes used first, especially in children and pregnant women to avoid radiation, but it produces an inconclusive result far more often. In one large study, ultrasound could only make a definitive call about 16% of the time, compared to CT’s 97.5%. When ultrasound does give a clear result, its sensitivity is high (around 98.5%), but the odds of getting that clear result are low.
Who Gets Appendicitis
The lifetime risk of developing appendicitis is about 7% to 8%. It peaks in the teens and twenties, making it one of the most common surgical emergencies in young adults, though it can happen at any age. It’s less common in very young children and older adults, but when it does occur at the extremes of age it can be harder to recognize because the symptoms are often less typical.
If you’re feeling a persistent, worsening pain in your lower right abdomen, especially if it started near your belly button and moved, that pattern is distinctive enough to warrant prompt medical evaluation. Appendicitis progresses over hours, not weeks, and early treatment is straightforward compared to a ruptured appendix.