Causes of Appendicitis

Written by Xu Jun Hui
General Surgery
Updated on January 24, 2025
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The appendix is connected to the cecum at one end, has a narrow lumen, and is rich in lymphatic tissue. The anatomical basis of the appendix makes it prone to inflammation. Generally, appendicitis is caused by different obstructions in the appendix, such as fecaliths, fecal masses, food residues, and parasites like roundworms, which can all lead to obstruction of the appendix and trigger acute appendicitis. Additionally, gastrointestinal dysfunction can also cause spasms and contractions of the muscles in the appendix wall, affecting the emptying of the appendix and its blood circulation, leading to inflammation of the appendix. Appendicitis requires timely treatment, and surgery might be necessary for symptomatic support.

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Diagnosis methods for chronic appendicitis

The diagnostic methods for chronic appendicitis mainly include medical history, clinical symptoms, physical examination, laboratory tests, and auxiliary examinations. Firstly, cases of chronic appendicitis generally have a history of acute appendicitis episodes. Clinically, it is mainly characterized by pain, discomfort, and dull pain in the lower right abdomen, often without a history of migratory lower right abdominal pain. In physical examinations, tenderness can be found in the lower right abdomen, and when chronic appendicitis flares up acutely, signs of peritonitis can manifest as rebound pain in the lower right abdomen. In laboratory tests, an increased white blood cell count can be observed. Auxiliary examinations may reveal thickening of the appendix wall and obstruction in the appendix lumen due to fecaliths. Therefore, chronic appendicitis can be diagnosed through methods such as medical history, clinical symptoms, physical examination, laboratory tests, and auxiliary examinations.

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Does acute appendicitis cause diarrhea?

Acute appendicitis rarely involves diarrhea. Typical symptoms include abdominal pain that begins around the navel or upper abdomen and gradually shifts to the lower right abdomen. The pain is persistent and localized. Additionally, irritation of the gastrointestinal tract may cause nausea or vomiting. If the appendix becomes suppurative or perforated, it can lead to tension in the abdominal muscles, tenderness, and rebound pain. Most cases of acute appendicitis require surgical removal, and currently, laparoscopic appendectomy is a commonly used procedure.

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Can appendicitis cause vomiting?

Some patients with appendicitis may experience symptoms such as nausea and vomiting. This is because the appendix is located in the lower right abdomen near the ileocecal area, and the appendix cavity is connected to the cecum. The appendix is an independent organ of the human digestive tract. When inflamed, the inflammation can easily irritate the surrounding intestines, causing intestinal spasms and contractions, leading to nausea and vomiting. A typical manifestation of appendicitis is referred pain in the lower right abdomen. Once appendicitis is diagnosed, it is advisable to promptly start anti-inflammatory treatment and, if necessary, proceed with surgical treatment. Appendicitis can range from acute simple appendicitis, which responds well to conservative anti-inflammatory treatment, to acute suppurative or even perforated appendicitis. In these severe cases, it is recommended to perform surgery as soon as possible to remove the appendix and clear the inflammatory secretions, alongside anti-inflammatory treatment.

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What to pay attention to with appendicitis

Patients with appendicitis should pay attention to diet adjustments and regular routines, as well as choosing the correct treatment method. Diet should be lighter, consume more vegetables, ensure smooth bowel movements, eat less raw, cold, and spicy foods, rest more, and avoid excessive fatigue, especially staying up late. Additionally, pay attention to active and effective treatments. Currently, surgical treatment is the main approach, and laparoscopic appendectomy can be chosen. This surgical method involves less bleeding during the operation and a faster postoperative recovery, requiring a rest period of two weeks post-surgery.

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Can appendicitis cause a fever?

Appendicitis can cause fever, and generally, it is considered an inflammatory condition. Besides fever, patients may experience abdominal pain, nausea, vomiting, etc. Typically, the abdominal pain manifests as lower right quadrant pain, which is referred pain. If a patient has fever and typical lower right quadrant pain, further investigations like abdominal ultrasound, complete blood count, and CT scans should be carried out. Diagnosing appendicitis is usually not difficult. The treatment of choice for appendicitis is generally surgical intervention, especially for early-stage patients with symptoms lasting less than three days, where an appendectomy is recommended. However, in some elderly patients with conditions like hypertension, diabetes, etc., who are not suitable for surgery, especially if the duration of the illness is more than three days, conservative medical treatment can be chosen. Conservative treatment primarily involves active anti-infection and anti-inflammatory measures and usually takes longer. (Medication should be administered under the guidance of a doctor.)