Bilateral Achilles tendinopathy of unknown origin responsive to corticosteroids: Case report

This case suggests a possible pathogenic role of immunoglobulin A-related immune mechanisms, though the lack of histopathological biopsy and genetic testing limited further etiological investigation. It offers a diagnostic and therapeutic reference for this rare bilateral acute Achilles tendinopathy, highlighting the potential role of immune factors in atypical tendinopathies.