Smoker's Cough: Why It Appears and What It Signals

A morning cough with sputum in a smoker is often perceived as something familiar — the sound that starts the day, like an alarm clock outside the window. But the airways are signaling irritation that accumulates over time. Understanding the cause of such a cough helps avoid missing the moment when it is time to see a doctor.

What smoker's cough is

It is a persistent cough with sputum that does not go away and accompanies a person day after day. Such a cough is one of the symptoms of chronic obstructive pulmonary disease (COPD), a condition in which air passes through the airways less well. COPD includes inflammation of the large airways (chronic bronchitis) and damage to the tiny air sacs inside the lungs (emphysema). Symptoms usually increase gradually, and in the early stages a person may notice nothing except the cough.

Why smoking causes cough

The cause is long-term inhalation of irritants that damage the lungs and airways. Cigarette smoke is the main one, but pipes, cigars and other types of tobacco smoke can also lead to COPD, especially if the smoke is inhaled. In response to irritation, the bronchial mucosa begins to produce more mucus, the walls of the airways thicken and become inflamed, and the air sacs lose elasticity. Cough is the airways' attempt to get rid of this mucus. Secondhand smoke, air pollution, chemical vapors and dust at work add to the risk.

How smoker's cough differs from a cold cough

In COPD, the cough does not go away and is accompanied by sputum, and symptoms increase gradually. If the cough persists for three weeks or longer, this is a reason to see a doctor.

Which diseases may underlie it

A persistent cough with sputum may be caused by COPD — most often it is the cause. Its signs include shortness of breath on exertion that previously was easy, for example when climbing a hill, frequent chest infections, wheezing and whistling when breathing, a feeling of tightness in the chest, and fatigue. In severe cases, weight loss, weakness of the leg muscles and swelling of the feet and ankles appear. Most people with COPD are at least 40 years old when symptoms appear, and up to 75 percent of them smoke or have smoked before.

How a doctor determines the cause of the cough

First, the doctor asks about symptoms, about smoking and whether there has been inhalation of smoke or irritants at work, and clarifies family history. Then examinations may be prescribed: spirometry — a breathing test showing how much air a person exhales; a chest X-ray; blood tests, including arterial blood gas and a test for alpha-1 antitrypsin deficiency. These checks show how the lungs are working and help rule out other causes.

Warning signs and when to see a doctor

You should see a doctor if shortness of breath appears with activities that previously required no effort, if the cough lasts three weeks or longer, or if chest infections recur frequently. With already known COPD, a reason for urgent consultation would be worsening shortness of breath, blood in the sputum, pain or swelling of one leg, or a feeling of irregular heartbeat. Do not postpone talking to a doctor: the earlier the cause is understood, the more can be done for the lungs.

By itself it is not a reason to call an ambulance; 103 or 112 — if the person is gasping for air, cannot speak, the chest is tight or heavy, pain radiates to the arms, back, neck and jaw, the lips or skin become pale, blue or gray, or sudden confusion appears.

• Cough with sputum that does not go away and lasts three weeks or longer
• Shortness of breath on exertion that previously was easy
• Frequent chest infections
• Wheezing, whistling when breathing and a feeling of tightness in the chest

This material is for reference and does not replace a doctor's consultation — only a specialist can assess your situation and suggest the next step.

This content is for reference and does not replace a doctor's consultation. Medical disclaimer