Does appendicitis cause diarrhea?

Written by Ren Zheng Xin
Gastroenterology
Updated on May 17, 2025
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Patients with appendicitis may experience diarrhea and abdominal pain, tenderness, and rebound pain due to spasms in the gastrointestinal tract, accompanied by vomiting and nausea. Those with severe systemic infections may also have a fever. Currently, appendicitis is primarily treated surgically, with options including the traditional McBurney's incision or laparoscopic appendectomy. In cases of appendiceal suppuration, postoperative antibiotic treatment against infection should be selected, using anti-anaerobic agents, and attention must be paid to postoperative diet, focusing on soft, easily digestible foods.

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Written by Ren Zheng Xin
Gastroenterology
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How long to rest after appendicitis surgery?

After an appendectomy, if there is no significant suppuration or infection, a recovery period of at least two weeks is required. During this period, it is important to rest, pay attention to diet, increase nutrition, and increase protein intake, such as eating more chicken, fish, and soy products. Also, consume more vegetables and fruits, engage in appropriate exercises to increase gastrointestinal motility. The surgical incision should be dressed regularly, and sutures can be removed after a week post-operation, then depending on the condition, decide whether to change the dressing again.

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Written by Ma Xian Shi
General Surgery
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Early symptoms of appendicitis

What are the initial symptoms of appendicitis? It is characterized by abdominal pain. The main symptom is abdominal pain that appears around the upper abdomen or navel, and some patients may also experience nausea and vomiting. Generally, two to three hours later, the abdominal pain gradually shifts to the lower right abdomen, which we clinically refer to as migratory right lower abdominal pain. This symptom accounts for about 80% of clinical cases, while some patients present directly with pain in the lower right abdomen, without transitional abdominal pain. Therefore, the primary symptom of appendicitis is abdominal pain, as described in these two scenarios. However, physical examination is also very important, typically revealing localized fixed tenderness in the lower right abdomen as the main clinical manifestation.

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Written by Ren Zheng Xin
Gastroenterology
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Appendicitis McBurney's point location

McBurney's point is a point of tenderness on the body surface during an episode of appendicitis, located on the right side of the abdomen, specifically at the outer third of the line connecting the navel to the right anterior superior iliac spine. If the appendix is significantly swollen or suppurative, there will be intense tenderness and rebound pain at McBurney's point. The tenderness and rebound pain at McBurney's point are also important physical examination signs for the clinical diagnosis of appendicitis. Based on the tenderness at McBurney's point, a preliminary diagnosis of appendicitis can be made, and then, the state of appendiceal swelling can be examined by abdominal ultrasound to choose a systematic treatment based on the results.

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Written by Ren Zheng Xin
Gastroenterology
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Causes of appendicitis

The main causes of appendicitis are the narrowing of the appendix lumen and the subsequent blockage of the appendix lumen. Bacterial infection can directly cause acute inflammation. Additionally, poor dietary habits in daily life can also trigger appendicitis. These include overeating and binge drinking, engaging in strenuous exercise right after eating, consuming strong tea, coffee, or spirits, neglecting rest, and excessive fatigue. Therefore, for the prevention of appendicitis, it is mainly important to develop regular lifestyle and eating habits, with meals at fixed times and in measured amounts, and consuming more vegetables to ensure the smooth functioning of the gastrointestinal tract.

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Written by Ren Zheng Xin
Gastroenterology
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Can appendicitis recur?

Acute appendicitis, if not treated surgically, can relapse under poor lifestyle and dietary habits and then transform into chronic appendicitis. Therefore, appendicitis can recur. However, if the appendix is removed during an acute episode of appendicitis, then appendicitis will not recur. Currently, the primary clinical treatment for appendicitis is surgery, because without surgery, the recurrence rate of appendicitis is quite high, and ultimately, the appendix must be removed.