Learn about the four stages of appendicitis , from simple inflammation to perforation, and how to recognize the signs and seek help. Find out the causes, complications, and treatments of this common abdominal condition. The diagnosis of acute appendicitis is predominantly a clinical one; many patients present with a typical history and examination findings. The cause of acute appendicitis is unknown but is probably multifactorial; luminal obstruction and dietary and familial factors have all been suggested. 1 Appendicectomy is the treatment of choice and is increasingly done as a laparoscopic procedure. This article reviews the presentation, investigation, treatment, and complications of acute appendicitis ... Acute appendicitis typically presents as acute abdominal pain starting in the mid-abdomen and later localizing to the right lower quadrant. Associated with fever, anorexia, nausea, vomiting, and elevation of the neutrophil count. Diagnosis is usually made clinically. If investigation is required, computed tomography scan or ultrasonography may show dilatation of the appendix outer diameter to more than 6 mm. Definitive treatment is surgical appendectomy. A nonoperative, antibiotic-only ... Appendicitis is acute inflammation of the vermiform appendix, typically resulting in abdominal pain, anorexia, and abdominal tenderness. Diagnosis is clinical, often supplemented by CT or ultrasound. Treatment is surgical removal of the appendix.