Wear a shoulder brace when you are suffering from a shoulder sprain. The use of a shoulder support to hold your sprained shoulder in the right position would help you to get a better rest and pain relief, and to heal your injury better.
A sprained shoulder happens when a ligament at shoulder joint is torn. Not every shoulder sprain is severe. Shoulder joint is very resistant, and well protected by strong muscles. In some situations, the capsule or ligament tear is mild. In others, it may be severe, in this case ligaments are completely torn. Typically, a shoulder sprain is triggered by a rough movement to the back when your arm is positioned at 90 degrees angle.
Sprained shoulder symptoms are: pain, swelling at the joint.
Treatment would depend on the severity of your shoulder sprain. For mild to moderate injury, apply ice, take some rest and wear a shoulder brace or sling. For severe sprain, you need to seek your doctor's advice.