Surgical

Other surgical causes = Testicular torsion, ischaemic colitis, volvulus, strangulated hernia, Meckel’s diverticulum, mesenteric adenitis, adhesions, hepatic abscess, psoas abscess
Medical

Other medical differentials = Gastroenteritis, constipation, Crohn’s disease, ulcerative colitis, MI, pneumonia, sickle cell crisis, DKA, pyelonephritis, IBS, Budd-Chiari syndrome, addisonian crisis, hypercalcaemia, acute intermittent porphyria, hepatitis
Gynaecological

Other gynaecological differentials = Salpingitis, pregnancy, fibroid degeneration, Fitz-Hugh–Curtis syndrome, endometriosis