Signs and symptoms of pulmonary fibrosis may include: 
Shortness of breath (dyspnea)
A dry cough
Fatigue
Unexplained weight loss
Aching muscles and joints
Widening and rounding of the tips of the fingers or toes (clubbing)
 The course of pulmonary fibrosis — and the severity of symptoms — can vary considerably from person to person. Some people become ill very quickly with severe disease. Others have moderate symptoms that worsen more slowly, over months or years. Some people may experience a rapid worsening of their symptoms (acute exacerbation), such as severe shortness of breath, that may last for several days to weeks. People who have acute exacerbations may be placed on a mechanical ventilator. Doctors may also prescribe antibiotics, corticosteroid medications or other medications to treat an acute exacerbation.