A chesty cough with phlegm that has gone on for months and getting out of breath on the stairs may be chronic obstructive pulmonary disease (COPD), easily dismissed by smokers as a “smoker’s cough”. The UK National Health Service (NHS) describes COPD as the name for a group of lung conditions that cause breathing difficulties, including emphysema (damage to the air sacs) and chronic bronchitis (long-term inflammation of the airways). It mainly affects middle-aged or older adults who smoke, and many people don’t realise they have it. Here are the NHS symptoms, when to see a GP, inhalers and medicines, pulmonary rehabilitation and self-care, set out as written.
1. Over 35, smoke or used to, with persistent breathlessness or a chesty cough: see a GP — a simple breathing test helps diagnose it.
2. Stopping smoking is the most important treatment; short-acting inhalers are used when breathless, up to 4 times a day.
3. Pulmonary rehab is usually 2 or more sessions a week for at least 6 weeks — plus a yearly flu jab and a one-off pneumococcal vaccine.
Symptoms — NHS
COPD develops slowly over many years, and most people have no noticeable symptoms until their late 40s or 50s, the NHS says.
| Type | What the NHS says | Worth noting (ours) |
|---|---|---|
| Breathlessness | Short of breath when active — at first only when exercising; you may wake at night breathless | — |
| Cough | A persistent chesty cough with phlegm that doesn’t go away | Some dismiss it as “smoker’s cough” |
| Infections | Frequent chest infections | — |
| Wheezing | Persistent wheezing | — |
| Flare-ups | Without treatment it gets worse; there are sudden worsenings (exacerbations) — a few a year is common, particularly in winter | Worth preparing before winter (ours) |
| Less common | Weight loss, tiredness, swollen ankles (oedema), chest pain and coughing up blood | Chest pain and blood usually point to another condition such as a chest infection or lung cancer; seen in advanced stages |
When to get medical advice — NHS
See a GP with persistent symptoms, particularly if you’re over 35 and smoke or used to smoke. Don’t ignore them: if it’s COPD, it’s best to start treatment as soon as possible, before the lungs are significantly damaged. The GP will ask about symptoms and smoking and can arrange a simple breathing test to diagnose COPD and rule out conditions such as asthma; bronchiectasis, anaemia and heart failure can cause similar symptoms. In Korea, a lung function test at a respiratory clinic is the equivalent (our note).
Causes — NHS
The lungs become inflamed, damaged and narrowed. The main cause is smoking; the more and the longer you smoke, the more likely COPD becomes. It can affect people who have never smoked, through long-term exposure to harmful fumes or dust or a rare genetic problem. The NHS calls COPD largely preventable: avoiding smoking significantly reduces your chances.
Treatment — NHS
Lung damage from COPD is permanent, but treatment can slow it and control symptoms. If you smoke, stopping is the most important thing you can do; in the early stages it may be all the treatment needed, and even people with advanced COPD benefit.
| Type | What the NHS says | Worth noting (ours) |
|---|---|---|
| Short-acting bronchodilator inhalers | The first treatment for most. Beta-2 agonists (salbutamol, terbutaline), antimuscarinics (ipratropium). When breathless, up to 4 times a day | — |
| Long-acting bronchodilator inhalers | With regular symptoms or flare-ups. Each dose lasts at least 12 hours, used once or twice a day | Combination inhalers exist |
| Steroid inhalers | If still breathless or with frequent flare-ups; usually in a combination inhaler with a long-acting medicine | — |
| Theophylline tablets | When inhalers aren’t enough; usually twice a day; blood tests check the level | Sickness, headaches, insomnia, palpitations |
| Mucolytics (carbocisteine) | For lots of thick phlegm; usually 3 or 4 times a day | Acetylcysteine powder if it doesn’t help |
| Steroid tablets | For a bad flare-up, usually a 5-day course | Long-term use: weight gain, mood swings, osteoporosis |
| Antibiotics | More breathless, coughing more, phlegm changing colour (brown, green, yellow) or thicker | Sometimes kept at home to start promptly |
| Roflumilast | Sudden worsening at least 2 times in the past 12 months, already on inhalers | — |
| Long-term oxygen | Low blood oxygen; at home for at least 15 hours a day | Never smoke when using oxygen — fire or explosion risk |
| Surgery | A small number with severe COPD. 3 operations: bullectomy, lung volume reduction surgery, lung transplant | Major operations with significant risks |
Pulmonary rehabilitation — NHS
Pulmonary rehabilitation is a specialised programme of exercise and education for people with lung problems such as COPD. It helps how much you can do before getting breathless, your symptoms, confidence and wellbeing. Programmes usually involve 2 or more group sessions a week for at least 6 weeks: tailored exercise such as walking, cycling and strength work, education for you and your family, dietary advice and psychological support, run by physiotherapists, nurse specialists and dietitians. During a bad flare-up, electrical muscle stimulation may be offered.
Living with COPD — NHS
| Type | What the NHS says | Worth noting (ours) |
|---|---|---|
| Medicine | Take prescribed medicine and inhalers — it helps prevent bad flare-ups. Check with your team before painkillers or supplements | — |
| Exercise | Regularly. A little breathless is not dangerous, but don’t push too far | See a GP first if symptoms are severe |
| Weight | Extra weight worsens breathlessness; if you lose weight unintentionally, get enough protein and calories | — |
| Vaccines | The annual flu jab and the one-off pneumococcal vaccination | See the pneumococcal vaccine page below |
| Weather | Cold spells and hot, humid weather cause breathing problems — watch forecasts, keep enough medicine | — |
| Avoid | Dusty places, car exhaust, smoke, air freshener sprays or plug-ins, strong cleaning products without ventilation, hairspray, perfume | — |
| Breathing | Breathing control with shoulders supported; pursed-lip breathing as if whistling; paced breathing on stairs | — |
Who is offered the pneumococcal vaccine and when is in pneumococcal vaccine. Before flying, get a fitness-to-fly assessment from a GP and pack inhalers in your hand luggage, the NHS says.
Checklist
- ☐ Over 35 with a smoking history and persistent symptoms: see a doctor
- ☐ Stop smoking — the most important treatment
- ☐ Short-acting inhaler when breathless, up to 4 times a day
- ☐ Phlegm changing colour with more breathlessness: tell your doctor
- ☐ Yearly flu jab; one-off pneumococcal vaccine
- ☐ Enough medicine for winter flare-ups
Questions that remain
Can COPD be cured?
The NHS says it can’t be cured or reversed, but for many people treatment keeps it from severely limiting daily life. In some it gets worse despite treatment and becomes life-threatening.
How is it different from asthma?
The page only says the GP’s breathing test helps rule out conditions such as asthma; it doesn’t compare the two in a table.
Sources
- NHS — Chronic obstructive pulmonary disease (COPD) — source (page shows: reviewed 11 April 2023, next review due 11 April 2026 (past at the time we checked); checked 27 October 2026). The overview and the “Symptoms”, “Treatment” and “Living with” pages — symptoms, GP criteria, causes, prevention, inhalers, tablets, rehab, oxygen, surgery, self-care, vaccines, flying.
- Not read. Details on the “Causes” and “Diagnosis” pages, the UK benefits section, Korean COPD guidance.
- What we added. The “worth noting” column and the Korean care gloss.
Where to check further
- A respiratory clinic — lung function tests and inhalers.
- A public health centre stop-smoking clinic — quitting.
Written on 27 October 2026. The content is from the NHS; the glosses are ours.
