Painful swelling of the shoulder blade suture in the back and stabbing pain in the shoulder and neck can be caused by shoulder diseases, myofasciitis, cervical spondylosis and other reasons. 1. Shoulder diseases: Frozen shoulder, rotator cuff tear and other diseases in the shoulder joint area can lead to pain and activity limitation in the shoulder, neck and scapular region of the back. 2. Myofasciitis: Myofasciitis can occur in the scapular area due to long-term activities or exposure to cold, localized aseptic inflammation, pain and other discomforts, and can also be radiated to the same side of the shoulder, neck, upper limbs and other areas, causing pain, weakness and other symptoms. 3. Cervical spondylosis: Cervical spondylosis can lead to nerve compression, pain, numbness and other nerve compression in the neck area, and radiating pain in the shoulders around the neck and scapula in the back. When there is swelling and pain in the scapular suture of the back and tingling in the shoulder and neck, you should consult a doctor in time, which will help to alleviate the pain and discomfort as soon as possible.