Appendix Surgery: Causes, Symptoms, Treatment, Procedure and Recovery

Sudden pain on the lower right side of your abdomen could be a sign of appendicitis. Left untreated, this common condition can become a medical emergency.

This guide explains everything about appendix surgery — from causes and symptoms to the procedure and recovery timeline — so you know exactly what to expect. For personal guidance, visit the Care and Cure Hospital home page to learn more about our surgical team.

Quick Answer: Appendix surgery (appendectomy) is the surgical removal of an inflamed appendix, most often caused by a blockage that leads to infection and swelling. It is treated with laparoscopic or open surgery, and most patients recover within 1 to 4 weeks.

What Is the Appendix and Why Does It Need Surgery?

The appendix is a small, finger-shaped pouch attached to the large intestine on the lower right side of the abdomen.

When it becomes blocked or infected, it swells and fills with pus, a condition called appendicitis. If it is not removed in time, the appendix can burst, spreading infection throughout the abdomen. Our general surgery services include emergency appendectomy for exactly this situation.

Diagram showing the location of the appendix within the large intestine and its position in the abdomen
Location of the appendix within the digestive system

Causes of Appendicitis

Appendicitis develops when the inner lining of the appendix becomes blocked, trapping bacteria inside and causing inflammation.

  • Blockage by stool or hardened waste (fecalith)
  • Swollen lymphoid tissue following an infection
  • Intestinal parasites or foreign objects
  • Abdominal trauma or injury
  • Tumors in rare cases

Types of Appendicitis

Appendicitis is generally classified into two types based on how quickly it develops and how severe it becomes.

Acute Appendicitis

The most common type, acute appendicitis develops suddenly and worsens rapidly over hours. It requires prompt medical attention and usually leads to emergency surgery.

Chronic Appendicitis

A rarer form, chronic appendicitis causes mild, recurring abdominal pain over weeks or months. It can be harder to diagnose but still carries a risk of sudden flare-up.

Risk Factors for Appendicitis

While appendicitis can affect anyone, certain factors increase the likelihood of developing it.

Common Risk Factors

  • Age between 10 and 30 years, though it can occur at any age
  • Family history of appendicitis
  • Low-fiber diet
  • Digestive tract infections
  • Abdominal injuries

Complications of Untreated Appendicitis

Delaying treatment for appendicitis significantly raises the risk of serious complications.

Possible Complications

Ruptured Appendix

If the appendix bursts, infection can spread throughout the abdominal cavity, leading to a life-threatening condition called peritonitis.

Abscess Formation

In some cases, the body walls off the infection, forming a pus-filled abscess that may need to be drained before surgery.

Symptoms of Appendicitis

Symptoms usually develop quickly, often within 24 hours, and tend to worsen over time.

Common Warning Signs

  • Pain that starts near the navel and shifts to the lower right abdomen
  • Pain that worsens with movement, coughing, or pressure
  • Loss of appetite
  • Nausea and vomiting
  • Mild fever
  • Abdominal bloating or swelling
  • Constipation or diarrhea
Person holding their lower right abdomen in pain, a common sign of appendicitis
Pain progression pattern in appendicitis