Abstract: ChILD -Children's interstitial lung diseaseChILD stands for children's interstitial lung disease.It is used to describe over 200 rare lung conditions that aff ect children.This factsheet explains what ChILD is, and how it is diagnosed and managed.More detailed information on the diff erent forms of ChILD is available on the ChILD Patient Priorities website: www.europeanlunginfo.org/childThe term 'interstitial lung disease' covers a large group of lung conditions that aff ect the interstitium, the tissue and space around the alveoli (air sacs) in the lungs.This is where oxygen is taken into the body and carbon dioxide is taken out of the body.