Overview
Interstitial Lung Disease (ILD) is the name given to a large group of conditions that affect the tissue around the air sacs in the lungs. These tiny air sacs allow oxygen to move into the blood. When the surrounding tissue becomes inflamed or scarred, it grows thicker and stiffer. The lungs then cannot expand easily, and less oxygen may reach the blood.
Some forms of ILD mainly cause inflammation, while others cause permanent scarring called pulmonary fibrosis. A condition involving this scarring may also be described as fibrotic lung disease. Patients may notice a dry cough, tiredness or shortness of breath during everyday activities.
Interstitial lung disease treatment depends on the cause, the amount of lung damage and how quickly the condition is changing. Sarvodaya Hospital’s Pulmonology & Sleep Medicine department provides ILD evaluation and long-term respiratory care.
Symptoms of Interstitial Lung Disease
- Shortness of breath, particularly while walking or climbing stairs
- A dry cough that does not settle
- Unusual tiredness or weakness
- Reduced ability to exercise or complete daily activities
- Loss of appetite or unplanned weight loss
- Chest discomfort
- Rounded or widened fingertips, known as clubbing, in some people
Causes of Interstitial Lung Disease
- Autoimmune diseases
- Workplace or environmental exposure
- Medicines and radiation
- Inherited conditions
Risk Factors for Interstitial Lung Disease
Certain factors may increase the possibility of developing ILD.
These include:
- Older age, although some forms also affect younger people
- Smoking or a history of smoking
- Regular exposure to harmful dust, fumes or chemicals
- An autoimmune disease
- A family history of pulmonary fibrosis
- Previous radiation treatment to the chest
- Long-term use of medicines known to affect the lungs
Diagnosis of Interstitial Lung Disease
Symptoms and a clinical examination may suggest a lung problem, but they cannot confirm ILD on their own. Doctors at a reputable hospital for interstitial lung disease usually combine imaging, breathing tests and medical history to determine whether ILD is present and identify its type.
Tests may include:
- Chest X-Ray: This can screen for changes in the lungs, but a normal X-ray does not always rule out early ILD.
- High-Resolution Computed Tomography Scan: An HRCT scan produces detailed pictures of the lungs. It helps doctors identify inflammation, scarring and patterns linked to particular types of ILD.
- Pulmonary Function Tests: These breathing tests measure how much air the lungs can hold and how quickly a person can breathe it out.
- Diffusing Capacity Test: The diffusing capacity of the lungs for carbon monoxide, or DLCO, measures how effectively gas moves from the air sacs into the blood.
- Six-Minute Walk Test: This records how far a person can walk in six minutes and whether the oxygen level in the blood falls during activity.
- Blood Tests: These may look for signs of an autoimmune disease or another condition affecting the lungs.
- Bronchoscopy or Lung Biopsy: If other tests do not provide a clear diagnosis, the doctor may collect cells or a small tissue sample from the lungs for examination.
An interstitial lung disease specialist may review the test results with radiologists, rheumatologists or other doctors before confirming the diagnosis and treatment plan.
Treatment Options and Technology for Interstitial Lung Disease
Treatment cannot always remove existing lung scarring. However, it may reduce inflammation, slow further damage, improve symptoms and help the patient remain active. An experienced ILD specialist doctor in Delhi NCR selects the treatment according to the exact type of ILD.
Treatment options may include:
- Removing the Trigger: Avoiding harmful dust, mould, birds or a medicine linked to lung damage may prevent continued exposure.
- Anti-Inflammatory Medicines: Corticosteroids reduce inflammation. Other medicines can reduce immune system activity when ILD is linked to an autoimmune condition. These treatments are not suitable for every type of ILD.
- Antifibrotic Medicines: Medicines such as nintedanib or pirfenidone may slow the loss of lung function in idiopathic pulmonary fibrosis and some other progressive forms of lung fibrosis. Pulmonary fibrosis treatment cannot usually reverse scarring that has already formed.
- Oxygen Therapy: If the oxygen level in the blood is low, oxygen delivered through nasal tubes or a mask can reduce strain during rest, activity or sleep. In this situation, breathing difficulty treatment may combine oxygen therapy with medicines and rehabilitation.
- Pulmonary Rehabilitation: Supervised exercise, breathing techniques and education can improve stamina and help patients manage daily activities.
Benefits of Early Treatment
Early diagnosis allows treatment to begin before extensive lung damage develops.
Timely care may offer the following benefits:
- Identifying and avoiding a harmful exposure
- Treating inflammation before it causes further damage
- Slowing the progression of some forms of pulmonary fibrosis
- Detecting a fall in lung function or blood oxygen level
- Supporting physical activity and independence
- Managing an associated autoimmune disease
Complications if Left Untreated
As lung tissue becomes thicker or more scarred, less oxygen may pass into the blood. The heart and breathing muscles may then have to work harder.
Possible complications include:
- Persistently low oxygen levels in the blood
- Pulmonary hypertension, which is high pressure in the blood vessels of the lungs
- Strain on the right side of the heart
- Severe loss of lung function
- Respiratory failure, in which the lungs cannot provide enough oxygen to the body
- Reduced mobility, muscle weakness and difficulty completing daily activities
When Should You See a Doctor?
Consult a trusted pulmonologist in Noida if breathlessness, a dry cough or reduced exercise capacity lasts for several weeks or continues to worsen. Assessment is also important for people with an autoimmune condition, a family history of pulmonary fibrosis or regular exposure to harmful dust.
Seek urgent medical care for sudden or severe breathlessness, chest pain, confusion, bluish lips or a rapid fall in the oxygen level in the blood at an ILD treatment hospital.
Prevention and Lifestyle Modifications
ILD cannot always be prevented because some forms result from inherited changes, autoimmune diseases or an unknown cause. However, practical steps may reduce avoidable lung injury and support treatment.
Helpful measures include:
- Avoid smoking and second-hand smoke.
- Use suitable protective equipment around dust, fumes and chemicals.
- Take prescribed medicines and oxygen exactly as advised.
- Remain physically active within limits set by the medical team.
- Eat a balanced diet and maintain a suitable body weight.
- Ask the doctor about recommended vaccinations.
- Report new breathlessness, cough, fever or reduced activity promptly.
Pre-Post Treatment Care
Pre-Treatment
- Reviewing symptoms, work exposure and current medicines
- Performing lung function, walking and blood tests
- Measuring the oxygen level in the blood
- Reviewing chest scans
- Checking for infections or autoimmune conditions
Post-Treatment
- Recording changes in cough, breathlessness and daily activity
- Repeating lung function and walking tests
- Monitoring for medicine side effects
- Adjusting oxygen use when necessary
- Continuing pulmonary rehabilitation
- Repeating imaging when clinically required
Reviewed & Updated On
Reviewed by Dr. Pankaj Chhabra Director & Head (Unit II) - Pulmonology & Sleep Medicine on 2 July 2026.
