Lower abdominal pain causes(right, left, both sides, center or pelvic indicated by R, L, B, C, P)
Appendicitis - RC
Cancer - RLCP
Crohn's Disease - LC
Diverticulitis - RLB
Ectopic pregnancy - RL
Endometriosis - CRLBP
Inguinal hernia - RLB
Intestinal obstruction - RLC
Injury - RLBCP
Kidney infection - RL
Kidney stones - RLBP
Painful ovulation (mittelschmerz) - RLCP
Ovarian cysts - RL
Pelvic inflammatory disease (PID) (infection of the female reproductive organs) - CRLP
Pregnancy - CP
Salpingitis (inflammation of the Fallopian tubes) - RL
Seminal vesiculitis (inflammation of the seminal vesicles) - RLBP
Shingles - RL
Thoracic
aortic aneurysm - LC
Unfortunately, some of the above causes are not well localized and the patients only say the pain is "'everywhere." A significant number of patients have this diffuse pain and yet may have a cause that is usually localized in other patients (for example, appendicitis, diverticulitis and others). However, there are causes that result in diffuse abdominal pain:
Aortic aneurysm
Bloating
Gas
Gastroenteritis
Intussusception
Irritable bowel disease (IBD)
Mesenteric ischemia
Mesenteric lymphadenitis
Peritonitis
Pregnancy (unknown to patient but delivering!)
Sickle cell anemia
Ulcerative colitis
Uremia.
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