Connective Tissue Disease-associated Interstitial Lung Diseases (CTD-ILD) Epidemiology Non-interventional Study (NIS)

This study collects data from patients with connective tissue diseases — such as lupus, scleroderma, rheumatoid arthritis, or inflammatory muscle diseases — who also have lung disease (interstitial lung disease, or ILD). Researchers want to build a registry to better understand how lung disease develops and progresses in these patients over time. **You may be eligible if...** - You have been diagnosed with a connective tissue disease such as rheumatoid arthritis, scleroderma, lupus, inflammatory myopathy, Sjögren's syndrome, or mixed connective tissue disease - You have or are suspected to have interstitial lung disease (scarring or inflammation in the lungs) - You are over 18 years old - You are willing to share information about your condition **You may NOT be eligible if...** - You do not have a confirmed or suspected connective tissue disease - You have not been diagnosed with or do not have signs of interstitial lung disease Talk to your doctor to see if this trial is right for you.