Introduction to interstitial lung disease

The interstitial lung diseases (ILDs) are a diverse group of conditions characterised by varying degrees of inflammation or fibrosis, predominantly affecting the lung interstitium. In many ILDs, the airways, parenchyma and pulmonary vasculature are also involved.

The terms ILD and pulmonary fibrosis are often used interchangeably.

ILD can develop in both adults and children; for information about childhood interstitial lung disease, see here.