II. Causes: Cardiopulmonary
- Cardiopulmonary Causes
- Pneumonia
- Empyema
- Myocardial Infarction
- Active Rheumatic Heart Disease
- Aortic Dissection
III. Causes: Hematologic
IV. Causes: Neurologic
- Spinal cord tunor
- Spinal Osteomyelitis
- Tabes Dorsalis
- Herpes Zoster
- Abdominal Epilepsy
- Abdominal Migraine
V. Causes: Genitourinary and Renal
- Pyelonephritis
- Perinephric Abscess
- Nephrolithiasis or other Ureteral obstruction
- Prostatis
- Seminal vesiculitis
- Epididymitis
VI. Causes: Metabolic
- Uremia
- Diabetic acidosis
- Porphyria
- Addison's Disease in crisis
VII. Causes: Toxin
- Bacterial Infection
- Insect Bites
- Snake Bite Venoms
- Spider Bite Venoms (e.g. Black Widow Spider Bite)
- Drugs
- Lead poison
VIII. Causes: Musculoskeletal and Mass Effect
- See Abdominal Wall Pain Causes
- Retroperitoneal Hematoma