If you suddenly feel fatigued or experience shortness of breath? Then, you might be suffering from pulmonary fibrosis. A medical condition that affects the lungs is known as pulmonary fibrosis. Damage and scarring of the lung tissues can cause pulmonary fibrosis. Due to this, your lungs will find it difficult to function normally. You start developing shortness of breath as it advances. Even though it is commonly seen in children, it can also occur in adults. If you are suffering from pulmonary fibrosis, you will exhibit symptoms like weakness, fatigue, muscle and joint pain, a sudden weight loss and so