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Interstitial Lung Disease
Interstitial lung diseases (ILD) are a large family of conditions that cause inflammation and scarring (fibrosis) of the delicate lung tissue. Because they can look alike but behave very differently, an accurate diagnosis is essential — it shapes both the treatment and the outlook.
Common types and causes
- Idiopathic pulmonary fibrosis (IPF)
- Hypersensitivity pneumonitis from inhaled allergens
- ILD linked to autoimmune and connective-tissue diseases
- Occupational and environmental exposures
- Drug-induced lung disease
- Sarcoidosis
Symptoms to watch for
- Gradually worsening breathlessness, especially on exertion
- A persistent dry cough
- Tiredness and reduced exercise tolerance
- Changes in the fingertips (clubbing)
How we reach a diagnosis
Getting to the right answer takes a careful, joined-up approach: a detailed history of exposures, medicines and autoimmune symptoms; a high-resolution CT scan (HRCT); pulmonary function tests including diffusion capacity; a six-minute walk test; targeted blood tests; and, when needed, bronchoscopy or a lung biopsy — all interpreted together rather than in isolation.
Managing the condition
- Treating any identifiable underlying cause
- Antifibrotic medicines where they are indicated
- Supplemental oxygen and pulmonary rehabilitation
- Vaccinations and infection prevention
- Regular monitoring to catch changes early
Why specialist care matters
ILD is best managed by a chest specialist over the long term. Precise subtyping, timely treatment and structured follow-up make a real difference to symptoms, quality of life and the course of the disease.