What are the symptoms of appendicitis?

The main symptoms of appendicitis include: 1. Abdominal pain: The typical presentation involves migratory right lower quadrant pain, where the pain initially starts in the upper abdomen or periumbilical area and gradually migrates to and localizes in the right lower quadrant, a process that may last 6-8 hours. The intensity of the pain progressively worsens and may be accompanied by tenderness and rebound tenderness. 2. Gastrointestinal symptoms: Symptoms such as nausea and vomiting are generally mild. Persistent vomiting, abdominal distention, and decreased flatus and bowel movements may occur when peritonitis develops at later stages. Some patients may also experience diarrhea, particularly in cases of pelvic appendicitis, where inflammation irritates the rectum and bladder, leading to increased frequency of bowel movements. 3. Systemic symptoms: Early symptoms may include fatigue and mild fever (temperature usually does not exceed 38°C). As the inflammation progresses, high fever (with temperature reaching 39-40°C), tachycardia, chills, delayed response, or restlessness may develop, indicating signs of toxemia. 4. Physical signs: Localized tenderness in the right lower quadrant is the most common and important physical sign of acute appendicitis. Signs of peritoneal irritation (such as rebound tenderness and abdominal muscle rigidity) suggest worsening inflammation of the appendix and may indicate the development of suppuration, gangrene, or perforation.