Overview
Fibrosis is a formation of fibrous tissues after injury or damage. Scarring occurs and thickens the tissue that was damaged. Fibrosis is most common in the lungs, liver and heart.
Symptoms
Fibrosis in the lungs can cause a cough that doesn't go away, chest pain and difficulty breathing. In the liver and heart, fibrosis can cause nausea, fatigue and weight loss
Treatments
The scarring from fibrosis can't be reversed. However, medicines and therapies can help improve symptoms and slow the formation of fibrosis. In severe cases, organ transplants may be needed.
Last Updated: August 26th, 2025
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