What causes a dull pain beneath the left rib cage?

What causes a dull, persistent pain beneath the left ribs? Dull pain beneath the left ribs may stem from various conditions, including pleurisy, intercostal neuralgia, costochondral fracture, tumors, or an acute angina attack. Additionally, gastrointestinal disorders—such as gastric tumors or gastric ulcers—can also cause such pain. Another possible cause is excessive physical exertion or severe fatigue.

Another potential cause is prolonged immobility in a fixed posture or repetitive motion—such as frequent torso twisting—which can repeatedly strain the soft-tissue muscles attached to the ribs, leading to localized aseptic inflammation and resulting in dull, persistent pain. Localized cold exposure or pressure—for example, sleeping in a prone position—may similarly trigger this type of discomfort. To achieve optimal therapeutic outcomes, it is essential first to identify the underlying cause of the dull pain beneath the left ribs and then administer targeted treatment accordingly.

If the pain results from costochondritis, treatment typically involves anti-inflammatory, analgesic, and—if indicated—antibiotic therapy. If the pain originates from cardiac disease, it is often accompanied by dyspnea; in such cases, immediate medical evaluation is critical to determine the precise etiology, followed by appropriate pharmacologic or surgical intervention.

If the pain is recurrent and associated with common gastrointestinal symptoms—including nausea, vomiting, abdominal pain, diarrhea, or even hematochezia—conditions such as colitis or gastrointestinal space-occupying lesions (including malignancies) must be ruled out. Trauma should also be considered and excluded in the differential diagnosis.