Appendicitis: Symptoms and When to Seek Emergency Care

Abdominal pain is common and may be caused by gas, indigestion, or a gastrointestinal infection. However, pain that gets worse, changes location, or occurs with fever and vomiting may indicate a condition requiring immediate medical attention.

Appendicitis is inflammation of the appendix and one of the most common causes of emergency abdominal surgery. It can affect children and adults, progress rapidly, and cause serious complications if it is not treated promptly.

The appendix is a small, tube-shaped structure connected to the beginning of the large intestine. It is usually located in the lower-right area of the abdomen.

Appendicitis develops when the inside of the appendix becomes blocked and inflamed. As pressure increases, blood flow may decrease and the tissues can become damaged. Without treatment, the appendix may rupture and cause an infection inside the abdomen.

Appendicitis cannot be diagnosed based only on the location of the pain. Digestive, urinary, and gynecological conditions can cause similar symptoms, so an in-person medical evaluation is necessary.

In a typical case, the pain begins near the belly button or in the center of the abdomen. Over the following hours, it may move to the lower-right side and become more constant and intense.

The pain may worsen when you:

• Walk or make sudden movements.
• Cough or sneeze.
• Take a deep breath.
• Touch or apply pressure to the abdomen.

Not everyone experiences this pattern. The location of the pain may vary depending on the position of the appendix, the patient’s age, pregnancy, and individual anatomy.

The most common symptoms include:

• Abdominal pain that worsens over time.
• Pain in the lower-right side of the abdomen.
• Loss of appetite.
• Nausea or vomiting.
• Fever.
• Abdominal swelling or tenderness.
• Difficulty passing gas.
• Constipation or diarrhea.
• General discomfort or weakness.

You do not need to have every symptom. Young children, older adults, and pregnant women may experience less typical signs.

There is no reliable home test that can confirm or rule out appendicitis. Seek immediate medical care if you experience:

• Severe abdominal pain or pain that worsens rapidly.
• Pain that moves toward the lower-right abdomen.
• Abdominal pain accompanied by fever, nausea, or vomiting.
• A rigid, swollen, or very tender abdomen.
• Difficulty walking upright because of the pain.
• Severe weakness, confusion, fainting, or unusual drowsiness.
• Pain that suddenly improves and then spreads across the abdomen.

A sudden decrease in pain does not always mean that the condition has improved. It can occur when the appendix ruptures, before more widespread pain develops from infection and irritation inside the abdomen.

Do not wait for every symptom to appear or repeatedly press on the abdomen in an attempt to diagnose the condition.

In adults, the most characteristic symptom is pain that begins near the belly button and later moves to the lower-right side. Loss of appetite, nausea, vomiting, and fever may also occur.

Older adults may have less intense pain or fever. This less obvious presentation can delay diagnosis and increase the risk of complications.

Older children and teenagers often develop symptoms similar to those seen in adults. Young children may not be able to explain where they feel pain and may present with:

• Irritability or unusual sleepiness.
• Refusal to eat.
• Vomiting.
• Fever.
• Abdominal swelling.
• Pain when walking, jumping, or moving.
• A preference for lying still.

A child with persistent or worsening abdominal pain, particularly when accompanied by fever or vomiting, needs an immediate medical evaluation. Do not give laxatives, enemas, or home remedies.

As the uterus grows, it may change the position of the appendix. The pain can therefore be felt higher in the abdomen instead of only in the lower-right area.

Abdominal pain during pregnancy may also have obstetric, urinary, or digestive causes. A pregnant patient with persistent pain, fever, or vomiting should receive immediate medical attention.

Appendicitis usually begins when the inside of the appendix becomes blocked. Possible causes include:

• Hardened stool or an appendicolith.
• Swelling of lymphatic tissue following an infection.
• Other, less common obstructions.

The blockage can lead to fluid accumulation, bacterial growth, and increased pressure inside the appendix. In many patients, no specific cause can be identified.

Diet, stress, and exercise are not considered direct causes. There is also no proven method that can completely prevent appendicitis.

Diagnosis begins in the Emergency Department. The physician will ask when the pain started, how it has changed, where it is located, and whether other symptoms have developed.

The evaluation may include:

• A physical examination of the abdomen.
• A complete blood count and other blood tests.
• A urine test.
• A pregnancy test when appropriate.
• An abdominal ultrasound.
• A computed tomography scan.
• Magnetic resonance imaging in selected cases.

CT scans provide high diagnostic accuracy in adults. Ultrasound is often used first in children and pregnant patients because it does not involve radiation.

Blood tests may show signs of inflammation or infection, but they cannot confirm appendicitis on their own. The diagnosis should combine symptoms, physical examination findings, and appropriate testing.

An inflamed appendix may rupture and release bacteria into the abdomen. This can lead to:

• Peritonitis.
• An abdominal abscess.
• Sepsis.
• Intestinal obstruction.
• A more complex operation and recovery.

It is not possible to predict at home when a rupture may occur. If appendicitis is suspected, the safest decision is to seek emergency care without waiting for the pain to become unbearable.

Treatment depends on the symptoms, imaging results, the presence of a rupture or abscess, and the patient’s general condition.

An appendectomy is surgery to remove the appendix and remains the standard treatment for most cases. It is performed by a general surgeon or, in children, by a pediatric surgeon.

It may be performed through:

• Laparoscopic surgery: Small incisions and a camera are used. This approach often results in less postoperative pain and a faster recovery.
• Open surgery: A larger incision may be necessary when there is extensive infection, a rupture, technical difficulty, or another medical concern.

The surgeon will select the safest technique for each patient.

Antibiotics are commonly given before or around the time of surgery. In carefully selected patients with uncomplicated appendicitis and no appendicolith, treatment with antibiotics alone may sometimes be considered.

This approach is not suitable for everyone. Treatment may fail, surgery may still be required during the same episode, or appendicitis may return later.

A rupture, peritonitis, or abdominal abscess may require:

• Intravenous antibiotics.
• Emergency surgery.
• Drainage of the abscess.
• Hospitalization.
• Close medical monitoring.

The Emergency and General Surgery teams will determine the safest treatment plan.

Recovery depends on whether the appendicitis was uncomplicated or perforated and on the surgical technique used. After an uncomplicated laparoscopic appendectomy, some patients can resume light activities within a few days.

The surgeon will explain when it is safe to:

• Return to work or school.
• Drive.
• Lift heavy objects.
• Exercise.
• Bathe and care for the incisions.
• Resume a regular diet.

After discharge, seek medical attention if you develop fever, increasing pain, persistent vomiting, significant abdominal swelling, drainage from an incision, or worsening redness around a wound.

The correct care pathway is:

• Suspected appendicitis: Emergency Department.
• Confirmed appendicitis in adults: Advanced General Surgery.
• Confirmed appendicitis in children: Pediatric Surgery.

A gastroenterologist may evaluate other causes of digestive symptoms, but waiting for a scheduled Gastroenterology appointment is not appropriate when appendicitis is suspected.

If you have severe abdominal pain, worsening pain, or symptoms suggesting appendicitis, go immediately to the BlueNetHospitals Emergency Department in Los Cabos.

📞 Emergency care: +52 (624) 1043 911

Do not drive if the pain is severe, you feel weak, or you have taken medication that affects your ability to drive. Ask someone to take you or contact an emergency service.

Appendicitis is inflammation of the appendix. Without prompt treatment, the appendix may rupture and cause a serious abdominal infection.

It commonly begins near the belly button and then moves toward the lower-right side of the abdomen. Its location can vary.

There is no reliable home test. Diagnosis requires a medical examination and often includes laboratory tests and medical imaging.

No. Fever may be absent during the early stages or in certain patients. The absence of fever does not rule out appendicitis.

Yes. Some patients develop diarrhea, while others experience constipation or difficulty passing gas.

Go to the Emergency Department immediately. Do not wait for a scheduled appointment or use laxatives, enemas, or home remedies.

Selected cases of uncomplicated appendicitis may initially be treated with antibiotics under strict medical criteria. There is still a risk of recurrence or the need for surgery.

A ruptured appendix can cause peritonitis, an abscess, or sepsis. These complications require immediate hospital care.

Recovery depends on the surgical technique and whether the appendix ruptured. An uncomplicated case treated laparoscopically usually allows a faster recovery.

The initial evaluation takes place in the Emergency Department. Definitive treatment is generally provided by a general surgeon or pediatric surgeon.