Appendicitis strikes roughly 300,000 Americans each year, making it the most common cause of emergency abdominal surgery in the United States. If you’re wondering what does appendicitis feel like, the answer is distinctive — a pain that often starts vaguely around the belly button and migrates to the lower right abdomen over several hours, intensifying as it moves. According to the National Institute of Diabetes and Digestive and Kidney Diseases, appendicitis most commonly occurs between ages 10 and 30, though it can happen at any age. Recognizing the pattern could help you get to the operating room before a rupture turns a straightforward surgery into a complicated one. For more on health conditions, see our medical conditions guide.
What Is Appendicitis?
Appendicitis is inflammation of the appendix, a small, finger-shaped pouch attached to the large intestine in the lower right abdomen. The appendix has no known essential function in adults, but when it becomes blocked — by stool, mucus, or swollen lymph tissue — bacteria multiply inside, causing swelling, infection, and eventually pus buildup. Without treatment, the appendix can rupture, spilling infectious material into the abdominal cavity and potentially causing peritonitis, a life-threatening infection.
The Mayo Clinic describes appendicitis as a medical emergency that typically requires surgery within 24 hours of symptom onset. While antibiotics alone can sometimes treat uncomplicated appendicitis, appendectomy remains the standard of care in the United States.
How Appendicitis Pain Progresses
The way appendicitis pain evolves is one of its most useful diagnostic clues. Understanding the stages helps you know what does appendicitis feel like as it develops.
Stage 1: Vague Pain Around the Belly Button
Appendicitis typically begins as a dull, crampy pain in the area around or above the navel (periumbilical region). The pain is often diffuse and hard to pinpoint — patients frequently describe it as a general stomachache or indigestion. This stage usually lasts 4 to 12 hours. The reason the pain starts near the belly button rather than the appendix’s actual location is that the visceral nerves of the intestinal tract refer pain to the central abdomen.
Stage 2: Pain Migrates to the Lower Right Abdomen
Over the course of several hours, the pain shifts and localizes to the lower right abdomen — specifically to an area called McBurney’s point, located about one-third of the distance from the hip bone to the navel. This migration pattern — from the center of the abdomen to the right lower quadrant — is considered the classic hallmark of appendicitis. The pain becomes sharper, more constant, and more intense.
Stage 3: Worsening Pain and Associated Symptoms
As inflammation progresses, the pain intensifies and is aggravated by movement, coughing, deep breathing, or pressing on the area. Walking may become difficult, and many people instinctively bend at the waist or guard the right side of the abdomen. Nausea, vomiting, low-grade fever (99 to 100.5 degrees Fahrenheit), and loss of appetite typically accompany the pain at this stage.
Other Symptoms of Appendicitis
While pain is the dominant feature, several other symptoms commonly accompany appendicitis.
Nausea and vomiting. Most people with appendicitis feel nauseated, and many vomit once or twice. Notably, the pain usually appears before the nausea — if vomiting occurs before abdominal pain, the diagnosis is less likely to be appendicitis.
Loss of appetite. Almost everyone with appendicitis experiences a significant decrease in appetite, often described as a complete lack of interest in food. This symptom is so consistent that doctors consider its absence a point against the diagnosis.
Low-grade fever. A mild fever of 99 to 100.5 degrees Fahrenheit is common in early appendicitis. A high fever (above 101 degrees) may indicate that the appendix has ruptured or that an abscess has formed.
Abdominal rigidity. The muscles of the abdominal wall may tighten involuntarily (guarding) when the area over the appendix is touched. Rebound tenderness — sharp pain that occurs when pressure on the abdomen is suddenly released — is another classic physical exam finding.
Changes in bowel habits. Some people experience constipation, while others develop diarrhea. Neither pattern is universal, but abdominal bloating and difficulty passing gas are common.
Appendicitis in Children vs. Adults
Appendicitis peaks in the teen and young adult years, but it can occur at any age — and the presentation varies significantly between age groups. In school-age children and teens, the classic migration pattern (periumbilical pain to right lower quadrant) is often present and relatively straightforward to recognize. However, in children under five, appendicitis is notoriously difficult to diagnose because young children cannot articulate their symptoms. They may show diffuse abdominal tenderness, irritability, refusal to eat, and vomiting — signs that overlap with many common childhood illnesses.
In adults over 60, appendicitis tends to present with milder pain, less prominent fever, and fewer classic findings on physical exam. This subtler presentation leads to delayed diagnosis and higher perforation rates in older adults — the perforation rate exceeds 50% in patients over 65, compared to roughly 20% in younger adults. According to the American College of Surgeons, maintaining a high index of suspicion for appendicitis in elderly patients with right lower quadrant pain is critical even when the presentation seems atypical.
Atypical Presentations
Not everyone experiences the textbook pattern. Several variations can make appendicitis harder to recognize.
Retrocecal appendix. If the appendix is positioned behind the cecum (the beginning of the large intestine) rather than in front of it, pain may localize to the right flank or lower back rather than the classic right lower quadrant. This occurs in about 30% of people.
Pregnant women. During pregnancy, the growing uterus pushes the appendix upward. Pain may be felt in the right upper abdomen rather than the lower right, which can delay diagnosis. According to the American College of Obstetricians and Gynecologists, appendicitis is the most common non-obstetric surgical emergency during pregnancy.
Young children. Children under five may not be able to describe or localize their pain accurately. Irritability, lethargy, and a distended abdomen may be the primary clues.
Older adults. Appendicitis in older adults tends to present with less pain and fewer classic features, leading to delayed diagnosis and higher complication rates.
What to Do While Waiting for Medical Evaluation
If you suspect appendicitis, there are a few important things to do — and not do — while you’re on your way to the emergency room or waiting to be seen.
Do not eat or drink. If surgery is needed, an empty stomach reduces the risk of complications from anesthesia. Do not take laxatives or enemas. These can increase the risk of rupture by stimulating intestinal contractions. Avoid heating pads on the abdomen. While heat may feel soothing, it can increase blood flow to an inflamed appendix and potentially worsen the situation. Take acetaminophen (Tylenol) if needed for pain. Avoid ibuprofen and aspirin, which can thin the blood and potentially interfere with surgery. Note the timeline. Recording when the pain started, where it began, and how it has changed helps emergency doctors assess your situation faster.
How Appendicitis Is Diagnosed
Doctors use a combination of clinical examination, blood tests, and imaging to confirm appendicitis. The physical exam focuses on tenderness at McBurney’s point, rebound tenderness, and guarding. Blood work typically shows an elevated white blood cell count, indicating infection.
A CT scan of the abdomen and pelvis is the most accurate imaging test for appendicitis, with sensitivity exceeding 95%, according to the National Library of Medicine. Ultrasound is preferred in children and pregnant women to avoid radiation exposure. In many cases, the clinical picture is clear enough that experienced surgeons proceed to surgery without imaging.
When to Go to the ER
When to seek emergency care: Call 911 or go to the nearest emergency room if you experience abdominal pain that starts near the belly button and moves to the lower right side, worsening abdominal pain accompanied by fever, inability to pass gas or have a bowel movement with escalating pain, or sudden relief of pain followed by worsening — which may indicate a ruptured appendix. Do not take laxatives, antacids, or pain relievers (except acetaminophen) before being evaluated, as these can mask symptoms or worsen a rupture.
Time matters with appendicitis. The risk of rupture increases significantly after 36 to 72 hours from symptom onset. A ruptured appendix transforms a straightforward laparoscopic surgery (typically one to two days in the hospital) into a much more complicated situation requiring IV antibiotics, possible drain placement, and a longer recovery. For more on emergency situations, see our guide on when to go to the ER for a headache.
Frequently Asked Questions
Where exactly does appendicitis hurt?
Appendicitis typically starts as a dull ache around the navel and migrates to the lower right abdomen over 4 to 12 hours. The most tender point is usually McBurney’s point — about one-third of the distance from the right hip bone to the navel. However, appendix position varies, and some people experience pain in the right flank, pelvis, or even the upper abdomen.
How quickly does appendicitis get worse?
Appendicitis generally progresses over 24 to 72 hours from initial symptoms to potential rupture. Some cases develop faster. The pain typically worsens steadily — if your abdominal pain has been stable or fluctuating for several days without progression, appendicitis is less likely, though not impossible.
Can appendicitis go away on its own?
Some mild cases of uncomplicated appendicitis have been treated successfully with antibiotics alone in clinical trials. However, there is a significant recurrence rate (roughly 20% to 40% within a year), and most surgeons in the United States continue to recommend appendectomy as the definitive treatment. Self-resolution without any treatment is rare and risky.
What else can feel like appendicitis?
Several conditions can mimic appendicitis, including ovarian cysts, ectopic pregnancy, Crohn’s disease, kidney stones, gastroenteritis, and mesenteric lymphadenitis (swollen lymph nodes in the abdomen). If you’re unsure, err on the side of getting evaluated — a CT scan can usually distinguish between these possibilities. See our article on what a kidney stone feels like for comparison.
Is appendicitis pain constant or does it come and go?
Early appendicitis pain may come and go in waves, similar to cramping. As the inflammation progresses, the pain typically becomes constant and steadily intensifying. If you’re experiencing constant, worsening right lower quadrant pain — especially with fever — seek medical evaluation promptly.
What to Do Next
If you’re reading this because you’re currently experiencing abdominal pain that started around your belly button and is moving to the lower right side, especially with nausea, fever, or loss of appetite — don’t wait. Go to the emergency room for evaluation. Appendicitis is one condition where “wait and see” is genuinely risky. An appendectomy is one of the safest and most commonly performed surgeries, and catching appendicitis before rupture makes the recovery straightforward — typically back to normal activity within one to three weeks. Understanding what does appendicitis feel like puts you ahead of the curve, but acting on that knowledge is what matters.