Follow-up care for shoulder bursitis often includes physical therapy. Treatments, such as heat, ultrasound, electrical stimulation, ice and compression, are used to decrease pain and muscle tightness. Heat treatments are not applied until a few days after a cortisone shot to avoid increased risk of a flare reaction. Range of motion exercises are prescribed to increase movement of the shoulder joint. Manual stretching is performed by the therapist to improve joint flexibility. Strengthening exercises improve shoulder stability and reduce pinching of the bursa as the arm is raised.