Yes, appendicitis can persist for months or even years. This form is called chronic appendicitis, and it accounts for roughly 1.5% of all appendicitis cases. Unlike the sudden, intense pain of acute appendicitis that sends people to the emergency room within hours, chronic appendicitis causes milder but ongoing or recurring pain in the lower right abdomen that can stretch on far longer than most people (and many doctors) expect.
What Chronic Appendicitis Feels Like
The hallmark is a dull to sharp pain in the lower right side of the abdomen that lasts well beyond the typical 24 to 48 hours of an acute episode. This pain is usually less severe, more of a persistent ache than the classic appendicitis emergency. It can come and go over weeks, months, or years, sometimes flaring up after meals or physical activity and then fading enough that you talk yourself out of worrying about it.
Some people also experience nausea, loss of appetite, general fatigue, and unexplained weight loss. Because the symptoms are so much milder than what people associate with appendicitis, many individuals live with them for a long time before getting a diagnosis. In one documented case, a patient had symptoms including weight loss, poor appetite, and general weakness stretching back 12 months before the appendix was identified as the cause.
How It Differs From Acute Appendicitis
The main difference is duration and intensity. Acute appendicitis escalates quickly, typically within 24 to 72 hours, with severe pain, fever, and elevated white blood cell counts that make the diagnosis relatively straightforward. Chronic appendicitis simmers at a lower level. The appendix stays inflamed but doesn’t fully obstruct or rupture, so the body doesn’t mount the same dramatic emergency response.
There’s also a related condition called recurrent appendicitis, though the two terms are sometimes used interchangeably. One useful distinction: chronic appendicitis involves three or more weeks of continuous lower right abdominal pain, while recurrent appendicitis presents as repeated separate episodes of similar pain with symptom-free gaps in between. Both can drag on for extended periods.
Why It’s So Often Missed
Chronic appendicitis has no official diagnostic criteria, which means many clinicians don’t consider it as a possibility. The condition is genuinely unfamiliar to some doctors, not because they lack training, but because it’s rare enough that they may never have encountered it. When a patient shows up with vague, ongoing abdominal pain rather than the textbook acute presentation, the appendix often isn’t the first suspect.
The symptoms overlap heavily with several more common conditions. Irritable bowel syndrome, Crohn’s disease, ovarian cysts, and urinary tract problems can all produce pain in the same area. In at least one published case, a teenage patient was initially diagnosed with Crohn’s disease before the real cause turned out to be chronic appendicitis. Imaging like CT scans can sometimes show an enlarged or thickened appendix, but chronic cases don’t always produce the obvious swelling that acute appendicitis does, making scans less reliable for catching it.
This diagnostic difficulty means people often cycle through multiple doctor visits, tests, and misdiagnoses before anyone considers the appendix. If you’ve had persistent or recurring lower right abdominal pain that no one can explain, chronic appendicitis is worth raising with your doctor directly.
What’s Happening Inside the Appendix
When surgeons remove an appendix that’s been chronically inflamed, the tissue tells a clear story under a microscope. Pathologists find signs of long-term, low-grade inflammation: immune cells embedded in the deeper layers of the appendix wall and areas of fibrosis, where normal tissue has been replaced by scar tissue. This scarring is the body’s response to ongoing irritation and confirms that the inflammation wasn’t a one-time event but a process that unfolded over a long stretch of time.
This is important because it provides objective proof that the condition is real. For years, some clinicians questioned whether chronic appendicitis existed at all. The histological evidence from removed appendices has helped settle that debate, showing clear physical changes consistent with sustained inflammation.
How It’s Treated
Surgery to remove the appendix is the definitive treatment. Because chronic appendicitis isn’t an emergency in the same way acute appendicitis is, the procedure is typically scheduled as an elective laparoscopic surgery rather than a rushed operation. The surgery itself is the same minimally invasive approach used for acute cases, usually involving a few small incisions and a recovery period of one to three weeks.
The outcomes are encouraging. In one study of 40 patients who had their appendix removed for chronic lower right abdominal pain, 90% were completely pain-free at six months. A separate review of 63 patients found that 92% of the removed appendices showed abnormalities under the microscope, and 95% of those patients were fully cured. The small percentage who still had pain after surgery likely had an additional or different underlying condition contributing to their symptoms.
For people who have spent months or years dealing with unexplained abdominal pain, those numbers represent a meaningful chance at resolution. The challenge is getting to the diagnosis in the first place.