This document provides an overview of chronic obstructive pulmonary disease (COPD) including its definition, types, symptoms, diagnosis and management based on both modern and Ayurvedic perspectives. It defines COPD and notes that it is the second most common lung disorder in India after tuberculosis. The types of COPD are described as chronic bronchitis and emphysema, with details on different types of emphysema. Clinical features, investigations, diagnosis and modern medical management approaches are summarized. Ayurvedic views on pathogenesis, clinical features of respiratory tract involvement, and treatment approaches focusing on shodhana and shamana therapies are also presented.