Thanks for your question on HCM. Idiopathic pulmonary fibrosis (IPF) is classified under Interstitial lung disease (ILD). It is chronic, progressive and idiopathic disease. Usually seen in old age. In this lungs become fibrosed, thickened and stiff. So all capacities are reduced and due to this oxygenation is hampered. You will need PFT ( Pulmonary Function Test ) and HRCT (High Resolution CT THORAX) for the diagnosis of IPF. The final confirmation of IPF is based on lung biopsy. So better to consult pulmonologist and discuss all these.