Asthma vs COPD: Symptoms, Tests and Rehabilitation

How asthma and COPD commonly differ

Asthma: symptoms often vary

NHS asthma information describes symptoms that often come and go, sometimes worsening at night or with triggers such as allergens, cold air, pollution or exercise. Asthma can begin at any age. A period without symptoms does not mean that prescribed treatment is no longer needed.

COPD: longer-term airway and lung damage

Asthma + Lung UK's COPD guide describes lung damage associated with harmful inhaled substances, including tobacco smoke, workplace dust or fumes. Ongoing breathlessness, cough and phlegm are common. COPD is not limited to people who currently smoke, and it can coexist with asthma.

Age, smoking history or how an inhaler feels cannot establish the diagnosis on their own. Tell your clinician about past breathing problems, exposures and changes in symptoms.

Tests used to investigate asthma and COPD

BTS, NICE and SIGN asthma guidance uses clinical history and supporting objective testing to confirm asthma. Tests may include markers of airway inflammation, spirometry with bronchodilator testing or peak-flow variation. Testing pathways differ for adults and children; younger children may need a different assessment approach.

NHS COPD diagnosis guidance describes spirometry after a bronchodilator to measure airflow. Depending on the findings, other investigations may look for conditions causing similar symptoms or assess severity. An X-ray alone does not establish COPD.

Bring your inhalers and medicine list to the appointment. Ask for instructions before any test; do not stop prescribed treatment yourself to try to make a test more accurate. Acute breathing difficulty needs treatment without waiting for routine tests.

Management follows the diagnosis and your needs

For asthma, ask about the inhaler regimen that applies to you, how to use each inhaler and your written action plan. Seek a review if symptoms wake you at night, limit usual activities or require your reliever more often. The instructions during an attack depend on the inhalers prescribed.

NHS COPD treatment information covers stopping smoking, inhaled medicines, rehabilitation and additional treatment when needed. Ask how to recognize a flare and what your agreed response should be. Oxygen is prescribed after assessment; it is not a general treatment for every episode of breathlessness.

Where pulmonary rehabilitation fits

NICE COPD guidance recommends an individualized pulmonary rehabilitation programme for appropriate people whose condition limits function. It combines exercise training with education and other support, after assessing suitability.

Ask about activities you want to regain, such as walking or climbing stairs, and how to monitor effort. A breathing technique should be taught for your assessed needs and reviewed if it makes symptoms worse. It cannot replace prescribed inhalers or medical treatment of an attack.

Our respiratory rehabilitation service can discuss suitability alongside your treating clinician's plan. The home physiotherapy guide explains how to get clear instructions. Our HMPV guide covers a respiratory infection that can worsen existing lung symptoms.

Breathing symptoms needing urgent medical attention

NHS breathlessness guidance advises emergency care for severe breathing difficulty, inability to speak, blue or grey lips, sudden confusion or a heavy, tight chest.

Follow your prescribed action plan during an asthma attack, and seek emergency help if symptoms worsen, the reliever does not help or you have no inhaler. Worsening breathlessness needs prompt medical advice; do not wait for a rehabilitation appointment to review an acute change.