What is the cause of appendicitis pain

Sometimes you may feel pain in the lower left or right side of your abdomen. Many people think that this pain is caused by appendicitis. You must go to the hospital for examination in time. There may be a problem with the appendix. Because the appendix and the appendix are connected, if the appendix is ​​infected, it will become inflamed. In severe cases, polyps will grow. If you want to avoid this situation, you must pay attention to your living habits to avoid infection. Here are the specific reasons.

Appendicitis is an inflammatory change caused by multiple factors. It is a common surgical disease, most common in young people, and more common in males than in females. Acute appendicitis is relatively common clinically and can occur in women of all ages and during pregnancy. Chronic appendicitis is less common.

1. Acute appendicitis

(1) Obstruction: The appendix is ​​a long, thin tube that is connected to the cecum at only one end. Once obstructed, secretions may accumulate in the lumen, increasing the internal pressure and compressing the appendix wall, which may hinder distal blood flow. On this basis, bacteria in the lumen invade the damaged mucosa and easily cause infection.

(2) The main cause of infection is direct infection caused by bacteria in the appendix cavity. If the appendix mucosa is slightly damaged, bacteria will invade the wall of the tube and cause infection of varying degrees.

(3) Other factors believed to be related to the onset of the disease include visceral nerve reflexes caused by gastrointestinal dysfunction such as diarrhea and constipation, which lead to spasms of the appendix muscles and blood vessels, resulting in stenosis of the appendix lumen, obstruction of blood supply, damage to the mucosa, and bacterial invasion, leading to acute inflammation.

2. Chronic appendicitis

Clinically, it can be roughly divided into two categories: recurrent appendicitis and chronic appendicitis. The former is mostly caused by the failure to completely eliminate the residual infection during the acute appendicitis attack, resulting in the prolonged illness. The latter has no history of acute appendicitis, and the symptoms are vague and the signs are often unclear.

1. Acute appendicitis

(1) Abdominal pain: Typical acute appendicitis causes pain in the upper and middle abdomen or around the umbilicus in the early stages. After a few hours, the pain moves to and becomes fixed in the right lower abdomen. When the inflammation spreads to the serosa and parietal peritoneum, the pain is fixed in the right lower abdomen, and the original pain in the upper abdomen or around the umbilicus is relieved or disappears. Therefore, the absence of a typical history of migratory right lower quadrant pain does not exclude acute appendicitis.

Simple appendicitis often presents with paroxysmal or persistent distending pain and dull pain. Persistent severe pain often indicates purulent or gangrenous appendicitis. Continuous severe pain affecting the middle or lower abdomen or both sides of the lower abdomen is often a sign of gangrenous appendix perforation.

(2) Gastrointestinal symptoms The gastrointestinal symptoms of simple appendicitis are not prominent. In the early stages, nausea and vomiting may occur due to reflex gastric spasm. Pelvic appendicitis or gangrenous appendix perforation may cause increased bowel movement frequency.