What should you know about COPD causes?

Repeated exposure to smoke, dust, chemical fumes, or polluted air can inflame airways and damage lung tissue. Past lung infections, early-life breathing problems, and uncommon inherited conditions can also influence vulnerability. Some people have more than one contributor. A person can have COPD without currently smoking, and smoking history alone does not establish the diagnosis.

Symptoms such as cough, phlegm, wheeze, chest tightness, or breathlessness overlap with other conditions. [Spirometry](/treatments/diagnostics-and-screening/spirometry/) measures airflow and helps a clinician interpret the wider picture.

Write down smoking and second-hand smoke exposure, jobs involving dust or fumes, home fuel exposure, and any family history of lung disease. Reduce avoidable irritants and use protective equipment advised for your workplace. If you smoke, a [Smoking Cessation Programme](/treatments/lifestyle-and-wellness/smoking-cessation-programme/) can provide structured support. Arrange a [Chronic Disease Review](/treatments/consultations-and-assessment/chronic-disease-review/) for ongoing symptoms or an existing diagnosis.

Seek emergency help for severe or rapidly worsening breathlessness, blue or grey lips, confusion, fainting, or difficulty speaking. Request prompt medical assessment for coughing blood, chest pain, fever, or a marked change in cough, phlegm, wheeze, or exercise tolerance. Do not assume an exposure explains a new warning sign.

Ask which exposures may matter in your history, whether spirometry is needed, whether another condition could explain your symptoms, and how to reduce workplace or household irritants. Ask for help choosing a smoking-cessation plan if relevant.