What Causes Pain in the Lower Left Abdomen?

Pain in the lower left abdomen is a common clinical symptom. Structures located in this region include the spleen, stomach, retroperitoneal organs, as well as components of the urinary and reproductive systems. Therefore, left-sided abdominal pain is typically associated with disorders involving the spleen, stomach, peritoneum, or urinary system. So, what causes pain in the lower left abdomen? Below, we address this question.

Causes of Lower Left Abdominal Pain

1. Colitis

Colitis can cause pain in the lower left abdomen. This pain is a typical symptom of colitis, characterized by a dull, persistent ache in the left abdomen, accompanied by mild tenderness and increased bowel sounds (borborygmi). Additionally, colitis commonly presents with diarrhea, loose stools, and increased frequency of bowel movements—often exceeding three times daily.

2. Urinary Tract Disorders

Urinary tract disorders may manifest as lower left abdominal pain. If the pain correlates with urination, it likely originates from the urinary system—such as renal or ureteral calculi (kidney or ureter stones). In addition to lower left abdominal pain, patients may experience hematuria (blood in urine) and flank pain.

3. Genital Inflammation

Genital inflammation may present with lower left abdominal pain. If such pain persists chronically and worsens after sexual intercourse or menstruation—along with increased vaginal discharge—it may indicate chronic endometritis. Alternatively, if symptoms intensify during periods of fatigue or around menstruation, accompanied by menstrual irregularities and persistent fatigue, chronic pelvic inflammatory disease (PID) is likely.

4. Pancreatitis

Lower left abdominal pain is a classic symptom of pancreatitis. The pain is typically sudden and severe, often triggered by heavy meals or alcohol consumption, and tends to intensify after eating—even causing generalized abdominal discomfort. Pain is most commonly localized to the left upper abdomen; however, when inflammation primarily involves the pancreatic head, pain may shift toward the mid-upper abdomen or slightly to the right. Leaning forward or flexing the torso often alleviates the discomfort.

The above outlines the primary causes of lower left abdominal pain, including colitis, urinary tract disorders, genital inflammation, and pancreatitis. We hope this information proves helpful.