Respiratory diseases are conditions that affect the tissues involved in breathing, which include lungs and airways. Diseases of the respiratory system may affect any of the structures and organs that have to do with breathing, including the nasal cavities, the pharynx (throat), the larynx, the trachea (windpipe), the bronchi and bronchioles, the tissues of the lungs, and the respiratory muscles of the chest cage.
The respiratory tract provide a field for a large numbers of disorders for three main reasons: (1) it is exposed to the environment which may be easily affected by inhaled organisms, dusts, or gases; (2) it consist of a large network of capillaries which give passage to the entire output of the heart to pass out, thus diseases affecting the small blood vessels are likely to affect the lungs; and (3) it provides a field of “sensitivity” or allergic phenomena that may profoundly affect functioning of the respiratory tract.
Respiratory diseases can broadly be classified in two categories (a) Acute respiratory diseases those last for a few days and Chronic those last a most long period. While acute respiratory diseases may be caused due to virus, bacterial infection etc; Smoking being the most common risk factors of chronic respiratory diseases. In addition to smoking, other risk factors include air pollution, occupational chemicals and dusts, and frequent lower respiratory infections during childhood. Chronic respiratory diseases are common throughout the world. According to the world health organisation “ CRDs are not curable; however, various forms of treatment that help open the air passages and improve shortness of breath can help control symptoms and improve daily life for people living with these conditions”.
Croup, Rhinitis, Bronchitis, Sinusitis, Pleurisy, Pneumonia are some common acute respiratory disorders while COPD, OSA, Pulmonary hypertension, Asthma are common most chronic respiratory disorders. Preventive measures include avoiding smoking, secondhand smoke, Alcohol, air pollution, chemical fumes, obesity, and stress; taking balanced diet, regular exercises, walk, yoga and pranayama.