Treatment of shoulder problems depends on their cause. An injection of a corticosteroid-local anesthetic mixture into the joint may be beneficial in those in whom the pain persists. Those with night pain may be given physical therapy to maintain flexibility and a full range of movement. Rotator cuff tendonitis and subacromial bursitis are initially treated with rest, non-steroidal anti-inflammatory drugs and modification of activities that cause pain. One recent study noted that patients treated with corticosteroid injections appeared to get faster relief of symptoms than those who received physical therapy, although other investigators have found no difference between these treatments in their long-term effects. There is still much debate as to which treatment is best, although many trials have compared different non-steroidal anti-inflammatory drugs, physiotherapy, and corticosteroid injections.

Pain of the shoulder may have many reasons, but the symtoms you are describing might be due du a muscle dysbalance. If something warm on your shoulder, a warm bath or somethinmg relaxing like a massage is helpfull, you might benefit from practicing in the gym under supervision to strength the chest and the shoulder girdle. If this is not helpfull, I would suggest to attend a orthopedian.

Chronic rotator cuff tears are treated conservatively with non-steroidal anti-inflammatory drugs and shoulder rehabilitation. A corticosteroid injection into the joint may help relieve a painful arc of abduction. An orthopedic specialist should be consulted if pain and weakness persists, because surgical repair may also be necessary in these cases. Acute rotator cuff tears require immobilization in a sling, and possible referral to an orthopedic specialist for surgical repair.

Application of an ice pack may help ease the pain. A recent study found that the frequent use of ultrasound (the use of high-frequency, inaudible sound waves) relieved symptoms and promoted healing in patients with calcify tendonitis. Once pain is controlled, exercises should be performed to maintain the function and mobility of the shoulder, and strengthen the rotator cuff. Non-steroidal anti-inflammatory drugs and restriction of pain-inducing activities are used to treat patients with early symptoms of calcify tendonitis. In those with severe pain, the arm should be put in a sling, and medications prescribed: non-steroidal anti-inflammatory drugs and perhaps an injection of local anesthetic into the joint.

Adhesive capsulitis is a condition that is best prevented: in any shoulder disorder, prolonged immobilization should be avoided and early return to movement should be encouraged. Adhesive capsulitis is treated initially with non-steroidal anti-inflammatory drugs, and a gentle exercise program of stretching once the pain is controlled. A corticosteroid injection or a short course of oral corticosteroids may be prescribed to control pain, although joint movement will not be restored by these drugs. Occasionally, the affected joint is manipulated with the patient anesthetised, in order to improve the range of movement.

Neck problems require anti-inflammatory medication, aggressive physical therapy, exercises, and gentle traction. Occasionally steroid injections into the tender trigger areas will help. More recently, patients with refractory pain have benefited from injections of botulinum toxin (Botox). A careful history, physical examination, and laboratory tests are needed. Imaging procedures are also helpful. The most important thing to bear in mind is that shoulder blade pain may have its origins far from the shoulder itself. Shoulder blade pain may be referred from other areas such as the gall bladder, heart, aorta, fallopian tubes, abdominal organs, diaphragm, and lungs.