What Is Appendicitis?

Why would a small tube you have probably never thought about suddenly cause pain strong enough to send you to hospital? That tube is the appendix, a narrow pouch attached to the large intestine in the lower right of your abdomen. Appendicitis is what happens when it becomes inflamed and infected. The video above follows a laparoscopic appendectomy for appendicitis — the operation used to treat it — and runs for just over three minutes, showing how surgeons work through small incisions while watching an enlarged view on a monitor.

What does the pain actually feel like at first?

It often does not start where you might expect. Many people first notice a dull ache around the belly button that, over hours, moves down and settles in the lower right side, where it tends to become sharper and more constant. Walking, coughing, or pressing on that spot can make it worse, and it is common to lose your appetite, feel nauseated, or run a mild fever alongside it. Not everyone follows that textbook pattern, though — the appendix can sit in a slightly different position, and that can shift where the pain is felt. That is one reason appendicitis is assessed in person rather than diagnosed from a description alone.

How do doctors check whether it is appendicitis?

They start with the story and an examination. A clinician will ask when the pain began, where it has moved, and what makes it better or worse, then gently examine your abdomen for tenderness in the lower right side. Blood tests can show signs of infection or inflammation, and urine tests are sometimes used to rule out other causes of similar pain. If the picture is still unclear, imaging — an ultrasound or a CT scan, depending on the situation — can help show an inflamed appendix and exclude other explanations. For the operation itself, our separate guide to appendectomy, or appendix removal surgery, explains that procedure in more detail.

Why is removing the appendix usually the answer?

Because an inflamed, infected appendix does not reliably settle on its own, and leaving it carries the risk that it will burst, spreading infection inside the abdomen — a much more serious situation. Removing it, an appendectomy, is therefore the standard treatment described in the anchor video above. As that video explains, the traditional approach used one incision in the right lower abdominal wall, while most laparoscopic operations today use three small incisions, with the surgeon watching the enlarged image on a screen. If you would like to compare approaches, the site's video "Appendicectomy Procedure" shows the surgical removal itself and describes it as an emergency procedure for acute appendicitis. Afterwards, most people are up and moving sooner than they expected, with recovery guided by the surgical team.

Frequently Asked Questions

What causes appendicitis?
Appendicitis happens when the appendix becomes inflamed and infected. A blockage inside the appendix is often part of the picture, but the exact trigger is not always identified in an individual case.

Where is appendicitis pain felt?
It often begins as a dull ache around the belly button and then moves to the lower right side of the abdomen, where it becomes sharper. The exact location can vary because appendix position varies.

Can appendicitis go away on its own?
You should not count on it. An inflamed appendix can worsen and burst, so suspected appendicitis is treated as urgent and assessed promptly in person.

What surgery treats appendicitis?
An appendectomy — removal of the appendix. It can be done through one larger incision or, commonly today, laparoscopically through three small incisions while the surgeon watches a monitor, as in the video above.

How long is the anchor video?
Just over three minutes (3 minutes 11 seconds). It follows a laparoscopic appendectomy for appendicitis and explains both the traditional open approach and the laparoscopic approach.

MedicalVideos.com has published trusted medical videos since 2007. The site was founded by Dr. Mohamed Ibrahim, MD, PhD — physician and researcher.

Educational only — this article is general information about appendicitis, not medical advice and not a diagnosis. Abdominal pain that is severe, worsening, or in the lower right side needs prompt in-person medical assessment — do not wait at home hoping it will pass.