Newborn babies with P.C.D. may have some breathing difficulties, though often these improve spontaneously. It is only many months or even years later that, if untreated, problems become apparent with recurrent upper and lower respiratory infections.
Chest physiotherapy to clear the airways helps prevent lung damage occurring. Without treatment it is inevitable that the lungs will eventually become damaged. At first the main symptoms noticed by parents may only be a loose cough, perpetually runny nose from birth and susceptibility to chest infections.
In some there are hearing problems associated with glue ear.