Appendicitis is inflammation of the appendix, a small pouch attached to the start of the large intestine, and it is a surgical emergency. The classic pattern is pain that begins as a vague ache around the navel and, within 12 to 24 hours, settles into the lower right abdomen and becomes sharp. Left untreated, an inflamed appendix can burst, so this is one abdominal pain you never wait out.
What Are the Symptoms of Appendicitis?
- Pain that starts near the navel and shifts to the lower right side
- Pain that worsens with coughing, walking, or going over a speed bump in a car
- Loss of appetite, which is often the earliest sign of all
- Nausea and vomiting that begin after the pain, not before
- Low-grade fever, usually under 38.5°C in the early stages
- Constipation or diarrhoea, and an inability to pass wind
- Tenderness when pressure on the lower right is released suddenly
Only about half of people show the textbook picture. Losing your appetite and having pain that migrates are the two features worth taking seriously even when everything else looks mild.
How Does the Pain Progress Hour by Hour?
| Timeframe | What typically happens |
|---|---|
| 0 to 12 hours | Dull, hard-to-place ache around the navel; appetite disappears |
| 12 to 24 hours | Pain migrates to the lower right and sharpens; nausea, low fever |
| 24 to 48 hours | Localised tenderness, guarding, pain on movement; risk of perforation climbing |
| Beyond 48 hours | Brief relief as the appendix bursts, followed by spreading pain, high fever and a rigid abdomen |
That short window of relief after a burst is dangerously misleading. It signals peritonitis, not recovery.
Why Is Appendicitis Harder to Diagnose in Women?
The right ovary and fallopian tube sit close to the appendix, so several gynaecological conditions produce almost identical pain. Before diagnosing appendicitis in a woman of reproductive age, a doctor should also consider a ruptured or twisted ovarian cyst, an ectopic pregnancy, pelvic inflammatory disease, and endometriosis. This is why a pregnancy test and a pelvic ultrasound are routine parts of the workup, and why negative appendicectomy rates have historically been higher in women. If you are being assessed for lower right pain, mention where you are in your cycle — it genuinely changes the differential. My guide to abdominal pain in women sets out how to tell these apart.
What Causes Appendicitis?
In most cases the opening of the appendix becomes blocked, usually by a hardened piece of stool, sometimes by swollen lymphoid tissue after an infection, and rarely by a growth. Bacteria multiply behind the blockage, pressure builds, the blood supply to the wall is compromised, and the tissue begins to die. That sequence is why time matters so much once symptoms start.
Appendicitis is most common between the ages of 10 and 30, but it happens at every age. It is not caused by eating seeds, chewing gum, or swallowing fruit pips, despite how persistent that story is.
How Is Appendicitis Diagnosed?
Diagnosis rests on examination first: tenderness at a point roughly two-thirds of the way from the navel to the right hip bone, pain when the abdomen is pressed and quickly released, and guarding. Blood tests usually show a raised white cell count and CRP. Imaging depends on who you are — ultrasound is preferred first for women and in pregnancy, while a CT scan gives the clearest picture in other adults. Scoring systems such as the Alvarado score help decide who needs imaging and who needs theatre.
How Is Appendicitis Treated?
The standard treatment is surgical removal of the appendix, almost always by keyhole surgery. Most people go home within one to two days and return to normal activity in two to three weeks. Antibiotics are given before and sometimes after the operation.
For carefully selected people with uncomplicated appendicitis and no stone in the appendix, antibiotics alone are an alternative. It works for the majority, but roughly one in three go on to need surgery within a year, so it is a shared decision with your surgeon rather than a default. If the appendix has already perforated, surgery plus a longer antibiotic course is necessary, and recovery takes longer.
Can Appendicitis Be Prevented?
Honestly, no — there is no proven way to prevent it. Populations eating higher-fibre diets appear to have lower rates, which is one of several reasons I encourage a genuinely varied intake of both soluble and insoluble fibre, but that association is far too weak to promise protection. The useful thing you can control is how fast you act on symptoms.
What Should You Avoid If You Suspect Appendicitis?
- Do not take laxatives or use an enema — both increase the risk of rupture
- Do not apply a heat pack to the area
- Do not eat or drink, in case surgery is needed
- Do not wait overnight to see if it settles
Frequently Asked Questions
Can appendicitis pain come and go?
It can fluctuate early on, and a small number of people have grumbling, recurrent appendicitis. Intermittent pain does not rule it out, so persistent lower right pain still needs assessment.
Can you have appendicitis without a fever?
Yes. Fever is often absent or minimal in the first day. Its absence is reassuring but not conclusive.
How quickly does an appendix burst?
Perforation becomes substantially more likely after about 36 to 48 hours of symptoms, though it can happen sooner. That is why same-day review matters.
Is appendicitis different during pregnancy?
Yes. The growing uterus pushes the appendix upward, so the pain may sit higher in the abdomen. Ultrasound or MRI is used instead of CT, and surgery is still the safest option for mother and baby.
About the Author
Nidhi Kakar is a nutritionist and the founder of Art of Wellness. She specialises in women’s health through the midlife years, from the mid-30s to the mid-60s, and has guided hundreds of women through perimenopause, menopause, and post-menopause with personalised nutrition and lifestyle plans.
This article is for educational purposes and does not replace personalised medical advice. Appendicitis is a medical emergency — if you suspect it, go to a hospital immediately rather than looking for answers online.
