How long does acute appendicitis last?

Written by Zhang Peng
General Surgery
Updated on June 20, 2025
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The recovery time for acute appendicitis depends largely on the specific type of presentation. For most cases of simple acute appendicitis, a conservative treatment approach typically results in healing within about a week, provided that the treatment is effective. It's crucial to monitor closely to prevent a recurrence. In cases of acute suppurative appendicitis or if perforation and gangrene have developed, often indicated by symptoms of diffuse peritonitis, surgical intervention is required. The choice of surgical method can affect the recovery time; traditional open surgery usually requires about two weeks for recovery. For minimally invasive treatments, recovery is generally complete within seven to nine days. In cases where an abscess forms around the appendix, the typical approach is conservative anti-inflammatory symptomatic treatment, often supplemented with traditional Chinese medicine to promote the absorption of inflammation. In most cases, it is advisable to opt for an appendectomy after about three months. (The use of medications should be under the guidance of a doctor.)

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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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Does appendicitis surgery require an incision?

Appendicitis surgery can be performed through traditional open surgery or minimally invasive treatment. Open surgery involves a traditional incision at McBurney's point to remove the appendix, which is now rarely used, predominantly replaced by minimally invasive treatment under laparoscopy. The procedure is the same for both methods, involving ligation of the appendicular artery followed by cutting the appendix at its base and suturing the stump. The advantages of minimally invasive surgery include less intraoperative bleeding, faster postoperative recovery, and less physical trauma. Patients can choose between open surgery or minimally invasive treatment based on their personal circumstances and financial conditions.

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Causes of Appendicitis

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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Written by Ren Zheng Xin
Gastroenterology
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Laparoscopic appendectomy

Laparoscopic appendectomy is a type of minimally invasive surgery performed under general anesthesia using laparoscopic techniques to remove the appendix. During the operation, there is minimal bleeding, and recovery tends to be quicker, with less damage to the body. The scars left are small, consisting of three barely noticeable incisions. Typically, patients need to stay in the hospital for three to five days before they can be discharged. On the day of the surgery, patients are required to fast, and one to two days post-surgery, they may choose a semi-liquid diet and can start moving around. However, laparoscopic surgery is not suitable for individuals who cannot tolerate general anesthesia; instead, they must opt for an appendectomy through an incision at McBurney's point.

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Written by Xu Jun Hui
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What are the symptoms of appendicitis?

The symptoms of appendicitis include migratory pain to the lower right abdomen, with some patients directly experiencing pain in the lower right abdomen. This is because the appendix is located in the ileocecal area of the lower right abdomen, and the appendix cavity is connected to the cecum. When the appendix becomes inflamed, it manifests as pain in the lower right abdomen or migratory pain in the lower right abdomen. The inflammation of appendicitis is generally caused by a blockage in the appendix cavity due to a fecalith, limiting secretion, and bacterial growth within the appendix cavity. Therefore, it is generally recommended to start anti-inflammatory treatment for appendicitis as soon as possible. If the inflammation is severe, surgery should be performed as soon as possible to remove the appendix and completely cure the inflammation. The symptoms of appendicitis also appear as migratory pain in the lower right abdomen. A few patients may also experience gastrointestinal symptoms such as nausea and vomiting. If the appendix perforates, symptoms include pain across the abdomen, tenderness, and abdominal muscle rigidity indicative of peritonitis.