A tingling sensation in the left shoulder blade can be caused by paresthesia, shoulder pain or shoulder numbness, and may be an early symptom of multiple sclerosis, as reported by Right Diagnosis. The tingling sensation is normally associated with "pins and needles" or even a burning sensation, and may then lead to a combination of numbness and a decrease in sensation. A tingling sensation is normally attributed to either a sensory nerve injury, damage or disease.
Nerve damage, disease or injury may be due to nerve entrapment, a nerve disease like neuropathy, multiple sclerosis or diabetes, or pressure being applied to the nerves directly or being applied to the spinal cord region.
There are many recommended treatments depending on what the underlying cause may be. Most medical professionals will need to perform a thorough visual examination and blood testing before they can come to a conclusion regarding which treatment may be most effective. The main objective of the treatments is to regenerate the functionality of the peripheral nerve cells. This is possible as long as the cells are not killed.
Common treatments that are recommended include following a doctor-recommended exercise routine, avoiding exposure to various toxins and chemicals and switching to a balanced diet.