Atopy and Frequency of Exacerbation in Chronic Obstructive Pulmonary Disease Patients

This study is investigating whether having atopy (a tendency to develop allergic conditions like hay fever or eczema) affects how often people with COPD (chronic obstructive pulmonary disease, a progressive lung disease usually caused by smoking) experience flare-ups (exacerbations). Researchers want to understand if undetected allergies play a role in worsening COPD. **You may be eligible if...** - You are 40–70 years old - You have been diagnosed with COPD according to current international guidelines (GOLD 2024 criteria) **You may NOT be eligible if...** - You have a known allergic condition (such as asthma, hay fever, or eczema) that was diagnosed before enrolling - You have another chronic lung condition alongside COPD - You have other significant health conditions that significantly affect your breathing - You have had a respiratory infection or taken systemic steroids in the month before enrollment Talk to your doctor to see if this trial is right for you.