The rotator cuff consists of tendons and four muscles--supraspinatus, subscapularis, infraspinatus and teres minor--and is located in your shoulder. It connects the shoulder blade with the upper arm and keeps the head of the upper arm bone securely in its socket.
Possible causes include tears of any of the four muscles. Tears can result from trauma, overuse or simply aging. "Most patients with tears of the rotator cuff complain of difficulty sleeping on the shoulder at night," reports JointHealing.com.
You may have some form of inflammation in your rotator cuff. Bursitis and tendinitis in the rotator cuff are both examples of inflammation there, the former involving your bursa sand the latter your tendons. Arthritis--inflammation of the joints--is another possible cause of pain in this area.
Rest your shoulder as much as possible. Ice it for 20 minutes every hour, and take anti-inflammatory medication like ibuprofen or naproxen sodium to decrease the pain and swelling. You may use heat pads after two days of icing.
Your doctor may recommend that you get corticosteroid injection to relieve inflammation and pain. Other options include surgery to repair a rotator cuff tear, or either a partial or full arthoplasty (shoulder replacement).
You can avoid rotator cuff pain by keeping your muscles there strong and flexible. Avoid doing too many repetitive movements over your head, as when you play tennis or paint a wall. Alway try to maintain a good posture.