Pulmonary fibrosis is a rare disease that causes scarring in the lung tissues, causing breathing difficulties. On the other hand, Cystic Fibrosis (CF) is a life-threatening, chronic, progressive disease of mucus glands. It primarily affects the respiratory system and digestive systems of young and adults. It can also affect the sweat glands and reproductive system. Both are lung diseases but have very different symptoms. Both diseases are progressive and chronic and eventually lead to fatalities. Impact of pulmonary fibrosis Pulmonary Fibrosis (PF) causes lung scarring, making it thicker and less elastic. As a result, patients with PF cannot take in enough oxygen while breathing. The scarring may also affect the air sacs, a lace-like structure that supplies oxygen to the capillaries, absorbs carbon dioxide and releases it during exhalation. Scarring in the air sacs prevents the lungs from expanding, preventing one from taking deep breaths, which directly limits the amount of oxygen that can enter the blood.  Allergens, side effects of prescription treatments, pollution, and family history, are said to be the causes of pulmonary fibrosis. Unfortunately, there is no definitive cure for the disease. However, the symptoms can be managed with treatments and lifestyle changes. And since it is a progressive disease, it mostly leads to fatalities.