Cardiovascular System (I00-I99).
- Ruptured aortic aneurysm (outpouching of the aorta that has ruptured) – usually left-sided rupture with continuous pain (annihilation pain) and tendency to collapse; possible additional symptoms: diffuse abdominal (stomach) and back pain, a poorly palpable inguinal (groin) pulse of variable intensity, and dizziness
Liver, gallbladder, and bile ducts-pancreas (pancreas) (K70-K77; K80-K87).
- Cholelithiasis (gallstones).
- Cholecystitis (inflammation of the gallbladder)
- Pancreatitis (inflammation of the pancreas), acute.
Mouth, esophagus (esophagus), stomach, and intestines (K00-K67; K90-K93).
- Acute mesenteric ischemia (AMI; intestinal infarction, mesenteric artery occlusion, mesenteric infarction, mesenteric occlusive disease, angina abdominalis) [MBS] Symptomatology:
- Initial stage with sudden onset of crampy abdominal pain (abdominal pain); distended abdomen, soft and doughy
- Pain-free interval of circa six to twelve hours (due toZugrundegehen the intramural (“located in the organ wall”) pain receptors) with soft abdomen (rotten peace) to shock symptomatology.
- Frequency: 1%; in over 70-year-olds: up to 10%.
- Appendicitis (appendicitis).
- Colitis (inflammation of the colon)
- Diverticulitis – inflammation of mucosal outpouchings in the intestine.
- Ileus (intestinal obstruction)
- Ulcus duodeni/ventriculi (duodenal ulcer/gastric ulcer).
Pregnancy, childbirth, and puerperium (O00-O99).
- Extrauterine pregnancy – pregnancy outside the uterus; extrauterine pregnancy is present in approximately 1% to 2% of all pregnancies: Tubalgravidity (ectopic pregnancy), Ovariangravidity (pregnancy in the ovary), Peritonealgravidity or Abdominalgravidity (pregnancy in the abdominal cavity), Cervicalgravidity (pregnancy in the cervix).
Psyche – Nervous System (F00-F99; G00-G99).
- Neuralgia (nerve pain), acute segmental.
Genitourinary system (kidneys, urinary tract – reproductive organs) (N00-N99).
- Adnexitis (ovarian inflammation), acute.
- Dysmenorrhea (menstrual pain)
- Glomerulonephritis – kidney disease, with inflammation of the kidney filterlets (glomeruli).
- Renal hemorrhage, the blood coagulum formed in the process can lead to renal colic.
- Upper urinary tract infection (UTI) such as pyelonephritis (inflammation of the renal pelvis; associated with fever and pyuria/excretion of purulent urine).
- Pedunculated ovarian cyst (ovarian cyst).
All diagnoses that may explain abdominal pain are also among the important differential diagnoses of acute nephrolithiasis.
