Shoulder impingement
It is an irritation or continued damage to the rotator cuff tendon and the bursa through articulation pressure by the acromion. This part of the shoulder blade is located on the top portion of the bone, so when you lift your arm, it rotates and puts pressure on soft tissue. Repeated motions when you have shoulder impingement causes tendonitis or bursitis and may turn into a limiting and painful condition by itself.