Bursitis is one of the many causes of impingement pain of the shoulder, giving restriction and pain when lifting the arm.
Bursae are small sacks of fluid and when inflamed in the shoulder, take up too much space, getting squashed when raising your arm causing painful pinching. Like all musculoskeletal problems, this is a problem of mechanics. Something doesn’t move properly.
From a manual physiotherapy perspective, bursitis, like all shoulder impingement problems usually responds well to joint mobilisation. In all my years of treating shoulder impingement almost all presentations have associated neck/upper back spinal joint stiffness. Manual mobilisation (loosening up) of the neck/back and shoulder joints will always yield improvement, unless there is structural damage. Having seen 100s of acute onset (within the previous two days) shoulder problems in the industrial sector, I can assure you that most of them come in with chronic, stiff upper backs that they’ve had for ages.
True bursitis usually responds as well to a guided Cortisone injection. Bear in mind if the neck and shoulder joints are still stiff the jab may not solve the problem.
If you have shoulder pain that has not responded to injection and/or seeing a Physio who just uses machines and/or exercises, consider manual physiotherapy from someone like me, before we all retire!

