What is the cause of left lower quadrant (LLQ) pain?

Medical Advisory BoardAll articles are reviewed for accuracy by our Medical Advisory Board
Educational purpose only • Exercise caution as content is pending human review
Article Review Status
Submitted
Under Review
Approved

Last updated: April 20, 2025View editorial policy

Personalize

Help us tailor your experience

Which best describes you? Your choice helps us use language that's most understandable for you.

Differential Diagnosis for Left Lower Side

The following differential diagnosis is based on the provided information, which is limited to "left lower side." This could refer to various symptoms or conditions affecting the left lower side of the body, such as abdominal pain, back pain, or other localized symptoms. Given the broad nature of the prompt, the differential diagnosis will be quite general.

  • Single Most Likely Diagnosis
    • Diverticulitis: This condition, which involves inflammation of the diverticula in the digestive tract, often presents with pain on the left lower side of the abdomen. It's a common condition, especially in older adults, and the location of the pain is a key diagnostic clue.
  • Other Likely Diagnoses
    • Constipation: Can cause pain or discomfort on the left lower side due to the location of the descending colon.
    • Irritable Bowel Syndrome (IBS): Although IBS can cause pain anywhere in the abdomen, some individuals may experience pain predominantly on the left lower side.
    • Ovarian Cyst (in females): Can cause lower abdominal pain, which might be more pronounced on one side, depending on the cyst's location.
  • Do Not Miss Diagnoses
    • Ectopic Pregnancy (in females): A life-threatening condition that can present with lower abdominal pain, often on one side. It's crucial to consider this in women of childbearing age.
    • Appendicitis: Although appendicitis typically causes pain on the right lower side, it can occasionally present atypically, especially if the appendix is retrocecal, and might cause left lower quadrant pain in rare cases.
    • Kidney Stone: Can cause severe pain that might radiate to the lower abdomen, potentially on one side, depending on the stone's location.
  • Rare Diagnoses
    • Intussusception: A condition where a part of the intestine slides into an adjacent part, which can cause abdominal pain, potentially localized to one side.
    • Colonic Volvulus: Involves the twisting of a portion of the colon, which can cause severe abdominal pain and might be localized to the left lower side if the sigmoid colon is involved.

Each of these diagnoses has a brief justification based on the typical presentation and location of pain or symptoms. However, a thorough medical evaluation, including history, physical examination, and diagnostic tests, is necessary to determine the actual cause of symptoms in any individual case.

Professional Medical Disclaimer

This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.

Have a follow-up question?

Our Medical A.I. is used by practicing medical doctors at top research institutions around the world. Ask any follow up question and get world-class guideline-backed answers instantly.