In this group of diseases, lung parenchyma is diseases unlike obstructive lung disases where air ways are diseases. Lung parenchyma may be diseases in interstitial lung diseases or pulmonary fibrosis.
In this group of diseases, there is difficulty in expansion of lung and that is why, this group is called restrictive lung diseases.
Intrinsic Restrictive Lung Disorders include:
Extrinsic Restrictive Lung Disorders include: