Differential Diagnosis for Shoulder Pain when Reaching Overhead
Single Most Likely Diagnosis
- Subacromial Impointment Syndrome: This condition is the most likely cause of shoulder pain when reaching overhead, as it involves inflammation of the tendons and bursae under the acromion, which can be irritated by overhead movements.
Other Likely Diagnoses
- Rotator Cuff Tendinopathy: Overuse or repetitive strain on the rotator cuff tendons can cause pain and weakness when reaching overhead.
- Adhesive Capsulitis (Frozen Shoulder): Although more commonly associated with restricted range of motion, frozen shoulder can also cause pain when reaching overhead.
- Labral Tears: Tears in the labrum, a cartilaginous structure surrounding the shoulder socket, can cause pain and catching sensations when reaching overhead.
Do Not Miss Diagnoses
- Cervical Radiculopathy: Referred pain from cervical spine nerve root compression can manifest as shoulder pain, and it is essential to rule out this condition to avoid missing a potential neurological issue.
- Thoracic Outlet Syndrome: Compression of the brachial plexus or subclavian artery can cause shoulder pain, numbness, and tingling, and it is crucial to consider this diagnosis to avoid missing a potentially serious condition.
Rare Diagnoses
- Osteonecrosis of the Humboing: A rare condition where the blood supply to the humboing is compromised, leading to pain and weakness in the shoulder.
- Septic Arthritis: A rare but potentially life-threatening condition where the shoulder joint becomes infected, requiring prompt diagnosis and treatment.
- Tumor or Metastasis: Although extremely rare, it is essential to consider the possibility of a tumor or metastasis in the shoulder region, which can cause pain and limited mobility.