Cough in Islamabad

Cough in Islamabad: Causes, Symptoms, Diagnosis & Treatment

Cough is one of the most common respiratory symptoms. However, cough is not a disease by itself. It is a protective reflex that can occur when the airways are irritated or when there is inflammation, infection, allergy, mucus, reflux or another underlying problem.

A short-lived cough after a viral infection may settle on its own. A cough that persists for weeks, repeatedly returns, disturbs sleep, produces significant sputum or occurs with wheezing or breathlessness deserves a more careful evaluation.

At Islamabad Respiratory Clinic (IRC), G-11 Markaz, Islamabad, persistent and unexplained cough is assessed by specialist pulmonologists Dr Muhammad Israr and Dr Jehangir Khan.

Quick Answer: What Causes a Persistent Cough?

Persistent cough can have many causes. Common possibilities include:

• Asthma and cough-variant asthma
• Post-viral or post-infectious cough
• Allergic rhinitis and post-nasal drip
• Acid reflux / GERD
• COPD and chronic bronchitis
• Tuberculosis
• Pneumonia and other respiratory infections
• Bronchiectasis
• Smoking and environmental irritants
• Medication-related cough, including ACE-inhibitor cough
• Other lung and airway diseases

How Long Have You Had the Cough?

Acute Cough — Less Than 3 Weeks

Acute cough commonly occurs with viral respiratory infections, common cold, influenza, acute bronchitis, pneumonia, asthma exacerbations and exposure to airway irritants.

Subacute Cough — 3 to 8 Weeks

A cough lasting several weeks after an infection may be post-infectious. However, asthma, pertussis, upper-airway disease and other causes may need to be considered when symptoms persist.

Chronic Cough — More Than 8 Weeks

In adults, a cough lasting more than eight weeks is generally classified as chronic cough. Chronic cough deserves a structured evaluation rather than repeated courses of cough syrup or antibiotics without identifying the cause.

Common Causes of Cough in Islamabad

1. Viral Infection and Post-Viral Cough

After a viral respiratory infection, the airways can remain sensitive for some time. This may cause coughing even after fever, sore throat and other acute symptoms have improved.

A post-viral cough does not automatically mean that antibiotics are required.

2. Asthma

Asthma is an important cause of recurrent or persistent cough. Not every patient with asthma has obvious wheezing.

Possible asthma-related cough patterns include:

• Dry cough
• Night-time cough
• Early-morning cough
• Cough after exercise
• Cough triggered by cold air
• Cough after dust or allergen exposure
• Chest tightness
• Episodes of breathlessness

Some patients have cough as their predominant asthma symptom. This may be described as cough-variant asthma.

When asthma is suspected, objective testing such as spirometry, bronchodilator assessment or FeNO may be useful depending on the clinical situation.

3. Allergy, Rhinitis and Post-Nasal Drip

The source of a chronic cough is not always the lungs. Nasal allergy and upper-airway inflammation can produce throat irritation and coughing.

• Runny nose
• Nasal blockage
• Sneezing
• Itchy nose
• Throat irritation
• Post-nasal drainage
• Frequent throat clearing
• Persistent cough

Islamabad's pollen, dust and environmental exposures can aggravate respiratory symptoms in susceptible people.

4. Acid Reflux / GERD

Acid reflux can contribute to chronic cough. Some patients may not experience classic heartburn.

Possible clues include:

• Cough after meals
• Cough when lying down
• Night-time cough
• Sour taste
• Throat irritation
• Hoarseness
• Frequent throat clearing

5. Tuberculosis (TB)

Tuberculosis remains an important respiratory disease in Pakistan. TB should be considered when the symptoms and clinical risk profile make it appropriate.

Possible symptoms include:

• Persistent cough
• Sputum
• Blood in sputum
• Fever
• Night sweats
• Unexplained weight loss
• Reduced appetite
• Fatigue

Not every prolonged cough is tuberculosis, but TB should not be missed when clinical features suggest it.

6. COPD and Chronic Bronchitis

COPD should be considered particularly in people with current or previous smoking exposure, sheesha use, occupational dust or fumes, persistent sputum or progressive breathlessness.

• Morning cough
• Persistent phlegm
• Breathlessness while walking
• Breathlessness on stairs
• Recurrent chest infections
• Reduced exercise tolerance

7. Bronchiectasis

Bronchiectasis can cause long-standing productive cough, recurrent chest infections, large amounts of sputum and sometimes blood in sputum.

When bronchiectasis is suspected, CT imaging may be required depending on the clinical assessment.

8. Pneumonia

Pneumonia can cause cough, fever, chills, sputum, chest pain and breathlessness.

Patients with significant breathing difficulty, severe weakness, confusion or rapidly worsening symptoms require prompt medical assessment.

9. Smoking and Air Pollution

Smoking is an important cause of chronic respiratory symptoms. Cigarette smoke, sheesha, occupational fumes, construction dust and other irritants can worsen coughing and airway inflammation.

10. ACE-Inhibitor Medicines

Some blood-pressure medicines known as ACE inhibitors can cause a persistent dry cough.

Examples include medicines containing enalapril, lisinopril, ramipril or perindopril.

Do not stop prescribed medicines without discussing the issue with your doctor.

Why Does Cough Become Worse at Night?

Night-time cough can occur with several conditions, including:

• Asthma
• Allergic rhinitis and post-nasal drip
• Acid reflux
• Respiratory infections
• COPD
• Other respiratory or cardiac conditions

The timing of cough is useful information, but night cough alone does not establish a diagnosis.

Dry Cough vs Wet Cough: Does It Tell You the Cause?

Not reliably.

Dry cough may occur with asthma, viral infection, reflux, allergy, medication-related cough and other conditions.

A productive cough can occur with infection, COPD, bronchiectasis and other respiratory diseases.

When Should You See a Pulmonologist for Cough?

Consider specialist respiratory assessment when:

• Cough lasts more than 3–4 weeks
• Cough repeatedly returns
• Cough is unexplained
• There is night-time cough
• There is wheezing
• You develop breathlessness
• You have persistent phlegm
• You have recurrent chest infections
• You cough blood
• You have unexplained weight loss
• You smoke or have significant smoke exposure
• You repeatedly require antibiotics
• You repeatedly require nebulization or steroids
• You have asthma that is not controlled
• You have COPD
• Your chest X-ray is abnormal

What Tests May Be Needed for Chronic Cough?

There is no single test that diagnoses every cause of cough. Investigations depend on the history, examination and suspected diagnosis.

Chest X-Ray

A chest X-ray may help evaluate several infectious, structural and pulmonary conditions.

Spirometry

Spirometry measures important lung-function parameters including:

• FEV1
• FVC
• FEV1/FVC ratio

It is particularly useful when asthma, COPD or airflow limitation is suspected.

FeNO

Fractional exhaled nitric oxide, or FeNO, can provide information about certain types of airway inflammation and may be useful in selected patients with suspected asthma or eosinophilic airway disease.

Peak Flow Monitoring

Peak expiratory flow measurements over time may help demonstrate variability in airflow in selected patients with suspected asthma.

Blood Tests

Depending on the clinical picture, tests may include CBC, eosinophil count, IgE, inflammatory markers or other targeted investigations.

TB Testing

When symptoms and risk factors suggest tuberculosis, appropriate TB testing may be required.

CT Chest

CT chest may be considered when conditions such as bronchiectasis, interstitial lung disease, lung mass, complicated infection or other structural disease are suspected.

Pulmonary Function Testing at IRC Islamabad

At Islamabad Respiratory Clinic, G-11 Markaz, appropriate lung-function assessment may include:

• Spirometry
• Bronchodilator assessment
• FeNO
• Peak-flow assessment
• Lung-age assessment
• Exhaled carbon monoxide monitoring

These tests can be particularly useful when assessing patients with chronic cough, wheezing, breathlessness, asthma or COPD.

Read the complete Pulmonary Function Tests guide at IRC →

Does Every Cough Need Antibiotics?

No.

One of the common mistakes in cough management is assuming:

Cough can be caused by viral infection, asthma, allergy, reflux, post-infectious airway sensitivity, smoking, COPD, medications and many other conditions.

Antibiotics should be used when there is an appropriate clinical indication.

Is Cough Syrup Enough?

Cough medicines may provide symptom relief in selected situations, but suppressing the cough does not necessarily treat the underlying disease.

• Asthma requires asthma-directed management.
• TB requires appropriate evaluation and treatment.
• COPD requires long-term respiratory management.
• Pneumonia may require specific treatment.
• GERD requires reflux management.
• Allergic rhinitis requires treatment of the upper airway.
• Bronchiectasis requires assessment of the underlying lung disease.

Cough After a Viral Infection — How Long Is Normal?

A cough can continue for some time after a viral respiratory infection has resolved.

However, persistent or worsening cough should not automatically be labelled as "post-viral cough."

Depending on the symptoms, a clinician may need to consider:

• Asthma
• Post-infectious airway hyperresponsiveness
• Pertussis
• Pneumonia
• Allergic rhinitis
• GERD
• COPD
• Tuberculosis
• Other respiratory diseases

Cough With Vomiting

Severe coughing attacks can themselves trigger vomiting.

However, repeated coughing attacks followed by vomiting can also occur with certain respiratory infections, including pertussis.

If coughing attacks are severe, repetitive or associated with breathing difficulty, medical assessment is appropriate.

Cough With Phlegm: What Does It Mean?

The amount and characteristics of sputum can provide useful information, but sputum colour alone does not prove that a bacterial infection is present.

A pulmonologist may consider:

• How long the sputum has been present
• Whether fever is present
• Whether there is breathlessness
• Whether blood is present
• Whether infections keep recurring
• Smoking history
• History of asthma or COPD

What Happens During a Cough Consultation at IRC?

A good cough assessment starts with a detailed clinical history rather than simply prescribing another cough syrup.

Questions Your Pulmonologist May Ask

• When did the cough start?
• Is it dry or productive?
• Is it worse at night?
• Is there wheezing?
• Is there breathlessness?
• Is there fever?
• Is there weight loss?
• Do you have nasal allergy?
• Could reflux be contributing?
• Do you smoke?
• Are you exposed to dust or fumes?
• Have you taken antibiotics?
• Are you using inhalers?
• Does exercise trigger symptoms?

Assessment May Include

• Respiratory examination
• Review of previous X-rays and CT scans
• Spirometry when indicated
• FeNO when appropriate
• Blood tests when clinically indicated
• TB evaluation when appropriate
• Additional imaging or respiratory investigations when required

Specialist Pulmonologists at IRC Islamabad

Frequently Asked Questions About Cough