Thanks for consulting at Healthcare Magic.
A lung infiltrate is a substance denser thanair , such as pus , blood, or protein, which lingers within the parenchyma of the lungs. Lung infiltrates are associated with infections like
pneumonia , allergic
bronchitis, eosinophilic lung disease, interstitial lung disease etc.
In your your case chest congestion, runny nose suggest it's probably due to allergic cause. Episodes of
cough, chest congestion, runny nose may occur due to exposure to an allergens.
You will need to identify what is triggering such episodes. It may be allergens like pollens, dust, mite etc, Some times chemicals like perfumes, mosquito repellents etc.
Adequate treatment may not be as effective if exposure to allergens is continued.
Ask your doctor for adding broncholdiator-
steroid nembulisation, antihistaminics etc.