What Is COPD? Understanding Chronic Obstructive Pulmonary Disease

Have you noticed that when you climb stairs, walk fast or do everyday things you’re more breathless than usual? Maybe you’ve had a cough for months or mucus is brought up regularly? There are lots of reasons why these symptoms happen but one condition doctors think of when they talk about them is COPD.

what is copd

So, what is COPD?

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COPD stands for Chronic Obstructive Pulmonary Disease. It’s a long-term lung disease where airflow is restricted (harder to breathe). COPD is an umbrella term used to describe chronic bronchitis and emphysema.

COPD develops slowly so people often don’t recognise their symptoms as normal ageing, smoker’s cough or being less fit. Persistent breathing symptoms need to be recognised and discussed with a healthcare professional.

What Happens to the Lungs in COPD?

To understand COPD you have to think of your lungs as a network of airways and tiny air sacs.

When you breathe in air moves through the airways into your lungs. Oxygen goes into your bloodstream and carbon dioxide is removed when you breathe out.

With COPD this normal airflow can become restricted.

Several changes may contribute, including:

  • Inflammation and swelling of airways.
  • More mucus is produced
  • Damage to tiny air sacs
  • Loss of elasticity in parts of lungs
  • Narrowing or blockage of airways (narrowing or obstruction).
  • Air may not move as easily into or out of the lungs

This is why a person with COPD may feel short of breath when walking, exercising or doing activities that require more oxygen

COPD Is More Than Just a "Smoker's Cough"

People think of COPD as being associated with smoking. Smoking is the major risk factor but COPD can occur in people who have never smoked either.

Other lung irritants that can cause COPD are:

Long term exposure to other lung irritants causes COPD. These include:

  • Secondhand tobacco smoke.
  • Dust and chemical fumes at work
  • Indoor air pollution
  • Smoke from biomass fuels used for cooking
  • Outdoor air pollution
  • Certain childhood respiratory problems
  • Some genetic conditions

WHO says tobacco exposure and air pollution are important causes and risk factors for COPD and occupational exposure to dust, fumes and chemicals can also be a cause.

This is particularly the case in countries like India where exposure to household and environmental air pollution is an important respiratory health problem.

So if you’ve never smoked but have breathing problems then don’t assume COPD is impossible.

What Are the Common Symptoms of COPD?

COPD symptoms may take time to develop and can be very mild at first.

Common symptoms include:

Persistent Cough

A cough that keeps coming back or doesn’t go away is also an early sign too. Some people produce mucus (or phlegm) when they cough.

Shortness of breath

Things that used to be easy (walking uphill, climbing stairs or carrying groceries) feel very breathless now.

Wheezing

Some people with COPD whistle when they breathe in. Wheezing sounds like air is going into your lungs very quickly instead of slowly and smoothly.

Excess Mucus

Increased mucus or phlegm production may occur due to changes and inflammation in airways.

Fatigue

Breathing problems can make you tired (especially if symptoms disrupt daily activities).

These symptoms can occur with other respiratory conditions so if you have a cough or breathlessness then it doesn’t mean you have COPD.

What Is the Difference Between Chronic Bronchitis, Emphysema and COPD?

These terms are used together a lot so it’s no surprise they can be confusing.

Chronic bronchitis is mainly long term inflammation of airways (chronic cough and mucus production).

Emphysema damages the tiny air sacs in the lungs so that the lungs are less able to exchange air.

COPD is the umbrella term for chronic lung disease (persistent airflow limitation and breathing problems). Most commonly emphysema but bronchitis and emphysema are also included.

You might therefore hear a doctor say more than one of these terms when describing the person’s lung condition.

Who Can Develop COPD?

COPD is more common with age but it’s not an “older person’s disease”. Risk increases if you have a history of:

COPD is more common with age but it’s not an “older person’s disease”. Risk increases if you have a history of:

  • Current or past smoking.
  • Long term exposure to secondhand smoke
  • Work place dust, fumes or chemicals
  • Indoor smoke from cooking/heating fuels
  • High air pollution exposure
  • Asthma or certain respiratory conditions
  • Family history of COPD
  • Rare genetic conditions (alpha-1 antitrypsin deficiency etc)

Your overall exposure history too — two people the same age can have very different risks because their smoking history, environment occupation and other health factors are different.

How Is COPD Diagnosed?

You can’t rule out COPD just by looking at symptoms.

A healthcare professional may ask about your breathing symptoms, smoking or exposure history, medical history and how your symptoms affect everyday activities.

A test used to help diagnose COPD is spirometry.

Spirometry is a test of how much air you can breathe in and forcefully exhale; it tells us how well your lungs are working.

This is because breathlessness and chronic cough can have many causes (asthma, respiratory infections, heart or other health problems).

If you have ongoing respiratory symptoms then a proper medical evaluation is more helpful than trying to diagnose yourself from an online list of symptoms.

Can COPD Affect Everyday Life?

COPD isn’t just about what happens inside the lungs.

As breathing becomes more difficult everyday activities become harder too. Someone may find it harder to:

  • walk long distances
  • climb stairs
  • exercise
  • do household tasks
  • work comfortably
  • socialise

WHO says COPD symptoms can gradually reduce normal daily activities (especially because of breathlessness).

This is one of the reasons why early detection and medical guidance are important.

Can COPD Be Cured?

This is a good question but also one I want to keep short here because COPD treatment and whether COPD can be cured are two separate topics (and they deserve their own article)

Currently major health authorities say COPD has no cure but it can be treated and managed. Treatment and lifestyle measures control symptoms; reduce flare ups and support quality of life.

The approach should be tailored to the individual and needs to be discussed with a qualified healthcare professional.

The detail we will have coming up can go much deeper into COPD treatment management and whether COPD can be reversed or cured.

When Should You Talk to a Doctor?

Don’t ignore changes in breathing just because they developed slowly.

See a healthcare professional if you have any of the following:

  • A cough that doesn’t go away.
  • Mucus or phlegm production repeatedly.
  • Breathlessness doing everyday things.
  • Wheezing frequently.
  • Increasing difficulty with physical activity.
  • Heavy smoking/occupational exposure history.

Early evaluation will tell you if COPD is causing your symptoms or something else.

And if you have severe or suddenly worsening difficulty breathing, chest pain, confusion, bluish lips/skin or other serious symptoms — don’t wait for your routine appointment. Go see a doctor right away.

Understanding Your Breathing Is the First Step

So what is COPD?

It’s a chronic lung disease (restricted airflow and breathing problems (often with chronic bronchitis and emphysema)). It can develop slowly and smoking is often involved but other exposures and factors may also be involved.

The problem isn’t that every persistent cough is COPD — or that ongoing breathlessness is just getting old.

If your breathing has changed then getting it assessed is a sensible first step.

Healthgate explains respiratory health in everyday language. If you have ongoing breathing symptoms or concerns about COPD talk to a qualified doctor or healthcare professional for advice and assessment.