What Causes Upper Left Back Pain Under Shoulder Blade

If upper back left pain is ever accompanied by numbness, weakness, severe headache, nausea, trouble walking, bowel/bladder incontinence, or other troubling symptoms, seek immediate medical attention.

When should I worry about upper left back pain?

If upper back left pain is ever accompanied by numbness, weakness, severe headache, nausea, trouble walking, bowel/bladder incontinence, or other troubling symptoms, seek immediate medical attention.

What organ is under your left shoulder blade?

The spleen sits under your rib cage in the upper left part of your abdomen toward your back. It is an organ that is part of the lymph system and works as a drainage network that defends your body against infection.