In simple words: Shoulder bursitis is inflammation of a small fluid-filled sac in your shoulder that helps your bones and muscles move smoothly. It's often caused by overuse, injury, or other health problems. Symptoms include shoulder pain, swelling, and stiffness. Treatment usually involves rest, ice, over-the-counter pain relievers, and possibly steroid injections or physical therapy.

Bursitis of the shoulder, also known as subacromial bursitis, is an inflammatory condition affecting the bursa, a fluid-filled sac that cushions the space between the rotator cuff tendons and the acromion (the highest point of the shoulder blade).It typically results from overuse, injury, or underlying conditions like arthritis, gout, or infection.Symptoms include pain, swelling, tenderness, limited range of motion, and potential redness or warmth in the affected area.Diagnosis involves physical examination, imaging (X-ray, MRI, ultrasound), and sometimes fluid aspiration for analysis. Treatment options include rest, ice, anti-inflammatory medications (NSAIDs), corticosteroid injections, and in severe or persistent cases, surgery.

Example 1: A 45-year-old tennis player presents with acute shoulder pain and swelling after a particularly strenuous match.Physical exam reveals tenderness over the subacromial bursa, and an X-ray is negative for fractures. Diagnosis: M75.5, treated with rest, ice, and NSAIDs., A 60-year-old woman with a history of rheumatoid arthritis experiences chronic shoulder pain and stiffness. Physical exam and MRI confirm subacromial bursitis.Diagnosis: M75.5, managed with physical therapy and corticosteroid injections., A 28-year-old construction worker sustains a direct blow to his shoulder while working.He reports immediate pain and swelling in his shoulder.Physical exam and ultrasound imaging confirm a traumatic subacromial bursitis. Diagnosis: M75.5, and treatment involves rest, ice, and possibly aspiration of the bursa.

Detailed history of present illness including onset, character, location, and duration of pain.Physical exam findings, noting range of motion, tenderness, swelling, and any signs of infection.Relevant imaging studies (X-ray, MRI, ultrasound) if performed.Results of any fluid aspiration and laboratory tests (e.g., for infection).

** Consider the potential for co-morbidities affecting the shoulder, such as rotator cuff tendinopathy, adhesive capsulitis, and osteoarthritis.Accurate diagnosis and treatment require comprehensive evaluation.