Appendicitis: Causes, Symptoms, Treatment & Types

What is Appendicitis?

Appendicitis happens when the appendix, a small pouch attached to the large intestine, gets inflamed and swollen. This often happens if something blocks the appendix, like stool, infection, or swelling, which lets bacteria multiply. As the infection worsens, pressure builds, causing belly pain and swelling. If it is not treated quickly, the appendix can burst and cause a serious infection in the abdomen. Because of these risks, appendicitis is a medical emergency and usually needs surgery to remove the appendix.

What are the Types of Appendicitis?

Doctors group appendicitis based on its severity and duration:

How Common is Appendicitis in India?

Appendicitis is one of the most common surgical emergencies in India and across the world. In a study from a major hospital in northern India, 63.9% of patients with appendicitis were male. The condition was most common among people aged 18 to 25, who accounted for almost half of all cases. On average, patients were of the age of 27.6 years old. It also stated that appendicitis can occur at any age but is most commonly seen in children, adolescents, and young adults between 10 and 30 years of age. With timely diagnosis and treatment, most people recover completely without long-term complications.

What are the Symptoms of Appendicitis?

Symptoms usually begin suddenly and worsen over time. Some common symptoms of appendicitis include the following:

• Abdominal Pain: Abdominal pain is usually the first and most common symptom of appendicitis. It often begins around the navel and gradually moves to the lower right side of the abdomen. The pain typically worsens over time and may become more severe with movement, coughing, or sneezing.

• Loss of Appetite: Loss of appetite is a common early sign of appendicitis. Many people notice a reduced desire to eat shortly after the abdominal pain begins.

• Nausea and Vomiting: Nausea and vomiting often develop after the onset of abdominal pain and may become more pronounced as the inflammation progresses.

• Changes in Bowel Habits: Appendicitis may cause constipation, diarrhoea, or other changes in normal bowel movements in some individuals.

• Difficulty Passing Gas: An inability to pass gas may occur due to intestinal irritation and can be a sign that the condition is becoming more severe.

• Abdominal Tenderness: The lower right side of the abdomen often becomes tender to touch. The pain may intensify when pressure is applied and then released.

• General Malaise: Many people with appendicitis report feeling tired, weak, or generally unwell, often alongside other symptoms such as pain, nausea, and fever.

What Causes Appendicitis?

Appendicitis occurs when the appendix becomes blocked and infected. It is caused by the following factors:

• Hardened Stool (Faecaliths): One of the most common causes of appendicitis is a blockage caused by hardened stool. The blockage traps bacteria inside the appendix, leading to infection and inflammation.

• Enlarged Lymph Tissue: Lymph tissue in the appendix may swell in response to a viral or bacterial infection. This swelling can obstruct the appendix and trigger inflammation.

• Gastrointestinal Infections: Certain bacterial or viral infections affecting the digestive tract can cause inflammation and swelling of the appendix, increasing the risk of appendicitis.

• Parasitic Infections: In rare cases, intestinal parasites may block the opening of the appendix, leading to irritation, infection, and inflammation.

• Tumours: Although uncommon, benign or malignant growths can obstruct the appendix and cause appendicitis by preventing normal drainage.

• Inflammatory Bowel Conditions: Conditions such as Crohn's disease may increase the risk of appendicitis by causing inflammation within the digestive tract and appendix.

• Abdominal Trauma: In some cases, injury to the abdomen may contribute to inflammation or blockage of the appendix, although this is relatively rare.

• Family History: Some studies suggest that genetics may play a role, as individuals with a family history of appendicitis may have a slightly higher risk of developing the condition.

What are the Complications of Appendicitis?

If not treated quickly, appendicitis can lead to severe complications such as:

• Sepsis: If the infection spreads into the bloodstream, it can lead to sepsis, a life-threatening condition that causes the body's immune system to overreact. Sepsis requires urgent medical care and may necessitate intensive care unit (ICU) treatment.

• Peritonitis: Peritonitis is an infection and inflammation of the peritoneum, the thin tissue lining the abdominal cavity. It can cause severe abdominal pain, fever, and a rigid abdomen and requires immediate medical treatment.

• Appendiceal Abscess: In some cases, a pocket of pus known as an abscess forms around the infected appendix. An abscess may need to be drained before surgery can be performed.

• Bowel Obstruction: Severe inflammation or infection can sometimes interfere with the normal movement of the intestines, leading to a bowel obstruction. This may cause abdominal swelling, vomiting, and difficulty passing stool or gas.

• Abdominal Infections: Even after the appendix ruptures, infection may spread to nearby tissues and organs, causing ongoing abdominal infections that require antibiotics and additional treatment.

When Should I See My Healthcare Provider?

Appendicitis requires medical treatment when patients experience symptoms such as the following:

• Sudden severe abdominal pain, especially if it begins around the navel and moves to the lower right side of the abdomen.

• Pain that moves to the lower right side of the abdomen and becomes progressively worse over time.

• Fever accompanied by abdominal pain, as this may indicate an infection.

• Persistent nausea or vomiting that does not improve or occurs alongside abdominal pain.

• Abdominal swelling or bloating, particularly if it is associated with tenderness and discomfort.

• Symptoms that worsen rapidly, including increasing pain, fever, or digestive symptoms.

• Signs of shock, such as dizziness, confusion, rapid heartbeat, difficulty breathing, or fainting, which may indicate a ruptured appendix or severe infection.

How is Appendicitis Diagnosed?

Your doctor may recommend one or more of the following tests:

How is Appendicitis Managed?

The treatment for appendicitis depends on the severity of the condition and whether the appendix has ruptured.

• Antibiotics: Doctors often prescribe antibiotics when appendicitis is suspected in order to help control the infection. For some people with mild cases, antibiotics alone might be effective, but surgery is still the main treatment.

• Laparoscopic Appendectomy: A laparoscopic appendectomy is a less invasive surgery where the appendix is removed through a few small cuts using a camera and special tools. People usually have less pain, spend less time in the hospital, and recover more quickly.

• Appendectomy: An appendectomy, which means removing the appendix with surgery, is the most common and effective way to treat appendicitis. Taking out the appendix stops it from bursting and gets rid of the infection.

Appendicitis During Pregnancy

Appendicitis is the most common surgical emergency in pregnant women that is not related to pregnancy itself. It can be harder to diagnose because pregnancy can change where the pain is felt. Quick treatment helps lower the risks for both mother and baby.

Some key points you should keep in mind are:

• Symptoms can be different from those seen in regular cases of appendicitis.

• Doctors often use ultrasound and MRI to help diagnose appendicitis in pregnant women.

• If needed, surgery can be done safely during pregnancy.

• Waiting too long to treat appendicitis can lead to more problems.

Can Appendicitis Be Prevented?

Although there is no guaranteed way to prevent appendicitis, certain healthy lifestyle habits that may help support this are the following:

• Maintaining a balanced diet can help keep the digestive system functioning properly.

• Seeking timely treatment for gastrointestinal infections may help reduce inflammation in the digestive tract.

• Regular health check-ups can help identify and manage underlying digestive conditions that may affect digestive health.

• Practising good food hygiene may help reduce the risk of gastrointestinal infections.

• Staying physically active can support healthy digestion and regular bowel function.

• Avoiding chronic constipation may help reduce the likelihood of blockages within the digestive tract.

Can Appendicitis Be Reversed?

No, appendicitis cannot be reversed once the appendix is inflamed. Antibiotics can sometimes help control infection in simple cases, but they do not always prevent it from coming back. Surgery to remove the appendix is still the best and most reliable treatment. It is important to get medical help quickly to avoid problems like a burst appendix, abscess, or serious abdominal infection.

Does Health Insurance Cover Appendicitis?

Most health insurance plans cover treatment for appendicitis and appendix removal because these are considered medically necessary. This usually includes hospital stays, tests, the surgeon's fees, medicines, and pre- and post-hospitalisation expenses, depending on your policy.

Since appendicitis is often an emergency, it is usually covered after the initial waiting period of 30 days. However, the waiting period may change depending upon the insurer and plan; therefore, it is recommended that you go through the policy documents carefully to know the exact coverage and benefits.

How Much Health Insurance Coverage Is Needed for Appendicitis Treatment?

The suitable health insurance plan for appendicitis depends on your age, where you live, your health needs, and the hospital you pick. Surgery for simple appendicitis is usually not too expensive, but costs can go up a lot if there are problems like a ruptured appendix or an abscess or if you need to stay in the ICU.

If you are young, a health insurance plan with ₹5–10 lakh coverage is usually enough for appendicitis treatment. Whereas adults and senior citizens should opt for a higher coverage of ₹10–15 lakh for better protection.