Korean guidelines for diagnosis and management of interstitial lung diseases: Hypersensitivity pneumonitis.

Hypersensitivity pneumonitis (HP) is an immune-mediated interstitial lung disease characterized by heterogeneous clinical manifestations and complex diagnostic challenges. This clinical guideline aims to provide a comprehensive framework for the diagnosis and management of HP, with an emphasis on the evolving classification into fibrotic and non-fibrotic subtypes. Integrating current clinical guidelines and expert consensus, it addresses key aspects such as radiologic and histopathologic findings, diagnostic strategies, and pharmacologic management. Tailored to the healthcare context in Korea, this guideline offers clinicians a structured approach to diagnosing and managing HP, taking into account regional variations in antigen exposure and clinical presentation. The recommendations herein are based on both international and local data, aiming to improve outcomes for Korean patients through timely and accurate diagnosis, individualized treatment plans, and careful monitoring.