- Acute inflammation of the vermiform appendix.
- Typically presents as acute abdominal pain starting in the mid-abdomen and later localising 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, CT scan and ultrasonography may show dilatation of the appendix outer diameter to more than 6 mm.
- Definitive treatment is surgical appendectomy.