Complicated appendicitis is a complication of acute appendicitis, which is defined as perforation of the appendix, with abscess or mass formation. The management of complicated appendicitis was initially with conservative treatment with intra-venous antibiotics, with percutaneous drainage of abscess reserved for patients with abscess formation. The recent trend has seen a movement towards immediate appendectomy with laparoscopic appendectomy being the preferred surgical option. As there is no definitive consensus on the management of complicated appendicitis, we have conducted this mini review to look at the treatment option for complicated appendicitis in adults and children.