Left shoulder blade pain may be caused by fasciitis, shoulder injury, bone tumor, cervical spondylosis and other reasons. 1. Fasciitis: seen in long-term work or long-term use of computers, caused by the shoulder blade region of the neck and shoulder muscle strain, can lead to fasciitis, stimulation by inflammation can cause pain around the shoulder blade. 2. Shoulder injury: trauma to the left scapula can lead to local soft tissue injury, bone injury, etc., scapular pain symptoms can occur, accompanied by local pressure and swelling, as well as subcutaneous bruising. 3. Bone tumor: when chondrosarcoma and other bone tumors occur in the bone of scapula, local swelling, pressure and pain, activity restriction and other discomforts may occur. 4. Cervical spondylosis: When the protruding intervertebral disc compresses the left nerve root, it can lead to numbness and pain in the innervated area of the scapula. There are many other causes of scapular pain, patients should consult a doctor in time, after the cause of the disease is clear, actively targeted treatment, so as not to delay the condition.