Sure, i've heard of pulmonary fibrosis. but now that my child may have it, i want to know what it really does to the body.?

Scarring of the lung: When scar tissue builds up in the lungs the lungs become still , breathing becomes difficult and the ability of the lungs to extract oxygen from the atmosphere with each breath is impaired.

Depends: On the cause of the fibrosis; may processes causes lung scarring (fibrosis). Some are well understood (e.g. Asbestos) and others are under investigation but not yet clearly understood (ipf/uip or so called idiopathic pulmonary fibrosis). Each cause of fibrosis has a different outcome, and some have treatments while others do not (other than transplant).