Neuropathies of the shoulder complex are rare and can be caused by trauma, overuse or impingement.
You will be examined thoroughly to exclude any other pathology, followed by specific special investigations, e.g. x-rays, electromyography(EMG) or possibly MRI.
Different nerve palsies present as suprascapular nerve, long thoracic nerve, spinal accessory nerve and axillary nerve palsies.
Your treatment will be determined by the mechanism of injury or anatomical reason for impingement, the duration of outfall and clinical or electrical signs of improvement.
It is important to adhere to your rehabilitation regime for the best possible outcome.