Pain in the back under shoulder blade, or scapula, can be a nagging ache or sharp, stabbing pain. Depending on what is causing it, a simple treatment plan may help reduce the discomfort.

Most commonly, a musculoskeletal condition is the cause of pain in the back under shoulder blade. This includes a muscle strain or myofascial pain syndrome with trigger points, direct injury to tendons and muscles and neck related problems such as a cervical disc herniation that puts pressure on nerves in the upper spine.

Postural issues can also cause shoulder blade pain. If you slouch forward often, it can place strain on the muscles in your back and shoulders. Poor posture also contributes to this type of pain, and it is a common reason for someone to experience back pain under the shoulder blade.

Heart disease is another possible cause of pain under the shoulder blade, especially in women. This can be a symptom of a heart attack, so it is important to see a doctor right away if this is happening. It is also a sign of thoracic aortic dissection, which is a tear in the inner layer of the thoracic aorta, which carries blood from your heart to your lungs and abdomen.

Cancers of the lungs and thoracic chest wall can also cause pain under your shoulder blade. Lung tumors, including Pancoast tumors, can push on nerves that service the scapula, causing referred pain. Other medical conditions that can cause referred pain include peptic ulcers, acid reflux and gallstones.pain in back under shoulder blade