A Case Study of Concurrent Parsonage-Turner Syndrome and Ankylosing Spondylitis: Diagnostic and Management Considerations.

Parsonage-Turner syndrome (PTS) and ankylosing spondylitis (AS) are distinct clinical entities with unique pathogenic mechanisms. The coexistence of these conditions in a single patient is rare and presents diagnostic and management challenges especially in adolescent patient. In this case report, we present a unique and intriguing case of an 18-year-old boy presented with acute onset shoulder pain and weakness, consistent with PTS.