If you have a Grade I acromioclavicular sprain, you will have slight swelling and tenderness at the outside tip of your collarbone. You will have mild pain when you move your arm or shrug your shoulder. In more severe acromioclavicular joint sprains, swelling will distort the normal contour of your joint, and the area will be very tender. You will feel significant pain when you try to move your arm or when your doctor or athletic trainer touches the joint while examining it.
Symptoms of sternoclavicular sprains are similar to those of acromioclavicular sprains, except swelling and tenderness are located near the midline of the chest.