- Pulmonary fibrosis is a category of diseases in which scarring occurs in the deep tissues of the lungs, causing them to gradually become thicker and stiffer, and is also referred to as pulmonary interstitial fibrosis.
- Environmental pollutants, certain medications, connective tissue diseases, and other interstitial lung diseases may be involved, and cases where no cause can be found are classified as idiopathic pulmonary fibrosis.
- It is understood that repetitive lung injury and abnormal wound healing cause the accumulation of fibrous tissue, which reduces the elasticity and oxygen exchange of the lungs.
- Representative features include progressively worsening shortness of breath and a persistent dry cough, which may be accompanied by fatigue and clubbing, where the tips of the fingers and toes become rounded and widened.
- Risks and progression may vary depending on the cause, smoking, occupational/environmental exposure, comorbidities, age, and an individual's lung function.
- Symptoms often progress slowly, and unexplained weight loss, muscle/joint pain may appear, and blood oxygen levels may become insufficient.
- Diagnosis is made by comprehensively integrating chest imaging, pulmonary function tests, and lung biopsy if necessary, based on medical history and exposure assessment.
- It may be difficult to confirm the cause and type through imaging or a single test alone, so differential diagnosis with infection, heart disease, and other interstitial lung diseases is required.
- Management aims to evaluate the cause and degree of progression and to reduce symptoms and function; exposure management and specialized respiratory care are important.
- Although there is currently no treatment to completely eliminate pulmonary fibrosis, medications, oxygen therapy, pulmonary rehabilitation, and lung transplantation may be used to improve symptoms and quality of life.