What causes pain inside the left ribs?

A dull, persistent pain inside the left rib cage is extremely uncomfortable and is typically caused by underlying disease—posing significant risks to human health. Therefore, this symptom warrants prompt attention. So, what causes pain deep within the left rib cage? Below is an explanation.

Causes of Pain Deep Within the Left Rib Cage

1. Trauma

Injury to the soft tissues surrounding the ribs—especially given the relatively superficial location of the ribs—can occur easily during daily work or activities, such as blunt impact, contusion, or compression injuries. Such trauma may damage the surrounding soft tissues and intercostal muscles, and even cause rib fractures, all of which can result in deep-seated pain beneath the ribs. In cases of left rib fracture, patients typically experience sharp, stabbing localized pain initially, accompanied by visible swelling, skin ecchymosis (bruising), abnormal mobility at the fracture site, crepitus (a grating sound upon palpation), and a positive chest compression test.

2. Costochondritis

Left-sided costochondritis can also cause deep pain beneath the left ribs. Although its exact etiology remains unclear, costochondritis is often associated with immune dysfunction and viral infections. It predominantly affects young and middle-aged adults, and rib pain may sometimes develop following upper respiratory tract infections (e.g., colds). Physical examination typically reveals localized tenderness over the affected costochondral junctions. Management primarily involves rest, physical therapy, and local corticosteroid injections.

3. Organ-related Disorders

Diseases affecting certain organs located beneath or deep to the left costal margin—including the spleen, pancreas, stomach, left pleura, and lungs—may manifest early on as deep pain beneath the left rib cage. Thus, any persistent pain in this region warrants timely medical evaluation to determine the underlying cause.

The above outlines common causes of pain deep within the left rib cage. We hope this information proves helpful to you.