The bursa sac is the shock absorber of our shoulder joint, it has to especially absorb and avoid strain on our shoulder, bones rubbing together or even tendons being squashed. It has to compensate over-straining and protect the shoulder joint. A temporary bursitis can then arise, if one has worked overhead for many hours, for example, like wallpapering the ceiling, painting or after having done a lot of overhead sport. The bursa sac is then squashed and kneaded, so to say, until it becomes inflamed. Usually bursitis disappears quite fast when taking it easy for a few days. But, if all of a sudden, the bursitis does not disappear so fast, or it comes about without having done something to trigger it off, this could mean that the bursa sac is squashed even in a state of resting. This happens if there is narrowness in the acromion, impingement syndrome. That means that even the slightest of movements like gripping handle bars or lifting a cup leads to such great pain that it takes one’s breath away. These pains are mostly suppressed by large amounts of pain killers. The sense of the pain is not seen. Pain is an alarm telling us to be aware of something being wrong.. Instead of looking for and disposing of the reasons, stronger weapons are necessary to master the pain. The next “phase” is then the injection, after which the bursa sac is often removed. And because no one has said where the problem lies and how to remove it, it takes maybe 2-3 months, maybe 1 year, and it starts all over again, but more intensely.