Patient presents with complaints of right shoulder pain, consistent with right shoulder tendinitis.  Onset of pain was gradual, reported as two weeks ago, and exacerbated by overhead activities and lifting.  Patient denies any specific injury or trauma.  Pain is localized to the lateral aspect of the right shoulder, radiating occasionally to the upper arm.  Patient reports stiffness and decreased range of motion in the affected shoulder.  Physical examination reveals tenderness to palpation over the right rotator cuff insertion, specifically the supraspinatus tendon.  Positive findings include pain with resisted abduction and external rotation.  Negative for impingement signs.  Differential diagnoses considered include rotator cuff tear, frozen shoulder, and calcific tendinitis.  Assessment: Right shoulder tendinitis (ICD-10 M75.11).  Plan: Conservative management including rest, ice, compression, elevation (RICE), over-the-counter nonsteroidal anti-inflammatory drugs (NSAIDs) such as ibuprofen for pain management.  Patient education provided regarding activity modification and proper body mechanics.  Referral to physical therapy for range of motion exercises and strengthening program.  Follow-up appointment scheduled in two weeks to assess response to treatment.  If symptoms persist or worsen, further investigation with imaging such as ultrasound or MRI may be considered.