Gastrointestinal
Appendicitis
Bowel obstruction
Constipation
Diverticulitis
Fecal impaction
Gastroenteritis
Hirschsprung disease
Incarcerated hernia
Intussusception
Irritable bowel syndrome
Meckel’s diverticulitis
Neoplasm
Perforated viscous
Regional ileitis (Crohn disease)
Ulcerative colitis
Volvulus
Urologic
Cystitis
Neoplasm
Urethritis
Pyelonephritis
Calculi
Musculoskeletal
Abdominal wall hematoma or infection
Trauma
Herniated disc
Arthritis
Strain or sprain
Hernia
Neoplasm
Gynecological
Pregnancy complications
Abortion
Dysmenorrhea
Ectopic pregnancy
Pelvic inflammatory disease
Endometritis
Neoplasm
Ovarian cyst
Salpingitis
Torsion of adnexa
Rupture of an ovarian cyst
Endometriosis
Mittelschmerz
Vascular
Ischemic bowel
Neoplasm
Sickle cell crisis
Neurological
Abdominal epilepsy
Abdominal migraine
Depression
Herpes zoster
Neoplasm
Other
Pneumonia
Herniated disk
