Why Your Chronic Cough Won't Go Away: Causes and When to See a Pulmonologist in Sharjah

If you have been coughing for weeks and paracetamol is not touching it, there is likely an underlying cause your GP may not have tested for yet. A cough lasting more than eight weeks is classified as chronic - not a lingering cold, not a tickle that will pass, but a symptom of something that deserves proper investigation. In the UAE, the picture is more complicated than in most countries. Desert dust, high humidity, air conditioning and occupational exposures create a layered environment that drives persistent coughing in ways that standard diagnostic frameworks do not always account for. Our pulmonology team at Sheikh Sultan Bin Zayed Hospital in Sharjah is experienced in unpicking exactly that.

Key Takeaways

• A cough lasting more than eight weeks is medically classified as chronic and warrants investigation beyond a standard GP visit.
• The UAE environment adds unique triggers - haboob dust, indoor air conditioning, shisha smoke and occupational exposure - that make chronic cough more common and harder to diagnose here than elsewhere.
• Most chronic coughs have a treatable cause once correctly identified; the problem is usually delayed or incomplete diagnosis, not an untreatable condition.
• Red flags including coughing up blood (haemoptysis), night sweats and unintended weight loss require urgent specialist assessment, not a wait-and-see approach.
• Post-COVID cough is now one of the leading causes of persistent cough in the UAE and is routinely assessed and managed by our pulmonology team.

What Causes a Chronic Cough?

Chronic cough is not a diagnosis - it is a symptom. The cough itself is rarely the problem; it is the signal. Identifying what is driving it is the entire task, and in a significant number of cases the cause is not immediately obvious without structured investigation.

The most common causes, in order of frequency, are:

1. Postnasal drip (upper airway cough syndrome): Mucus from the sinuses drips down the back of the throat and triggers the cough reflex. In the UAE, dry and dusty air irritates the nasal lining constantly, making this the single most common driver of chronic cough in the region.
2. Asthma - particularly cough-variant asthma: In this form of asthma, a persistent dry cough is the primary or only symptom, with little or no wheeze. It is frequently missed because patients and clinicians are not expecting asthma without breathlessness. (For more detail on asthma diagnosis, see our guide: Asthma vs. COPD: What's the Difference and How Are They Treated?)
3. GERD (gastro-oesophageal reflux disease): Acid from the stomach rises into the oesophagus and irritates the airways, triggering a cough - often without any heartburn the patient would associate with reflux.
4. ACE inhibitor medication: A class of blood pressure medicines (prescribed very commonly in the UAE) causes a dry, persistent cough in 10 to 15% of patients who take them. It is one of the most overlooked and easily resolved causes.
5. Chronic bronchitis and COPD: A productive morning cough - particularly in anyone who smokes or has smoked - is a hallmark early sign of COPD. (Full details in our companion guide: How to Know If You Have COPD: A Sharjah Pulmonologist Explains the Warning Signs)
6. Post-COVID cough: Persistent cough following a COVID-19 infection has become one of the most common presentations in our clinic since 2021. The mechanism is not fully understood but likely involves airway inflammation, small airway damage and in some cases a new sensitivity to environmental triggers.
7. Pulmonary fibrosis and interstitial lung disease: A dry, progressive cough - particularly in older adults or those with occupational exposures - can indicate scarring of the lung tissue. This is a less common but serious cause that requires imaging and specialist review.

Causes at a Glance

UAE-Specific Causes of Chronic Cough

This is where a consultation in Sharjah differs from one in London or Sydney, and it matters.

The UAE's environment creates respiratory exposures that simply do not feature in standard clinical guidelines written for temperate climates. Haboob dust storms - sudden, dense walls of particulate matter - deposit fine silica and biological material deep into the lower airways. For most people, a single haboob causes temporary irritation. For those with any underlying airway sensitivity, repeated exposure over months and years creates chronic mucosal inflammation that presents as a persistent, dry or mildly productive cough.

Indoor air conditioning is underappreciated as a cause. The extreme shift between outdoor heat and aggressively cooled indoor air - in homes, offices, malls and cars - dries out the nasal and bronchial mucosa repeatedly throughout the day. Mucosal dryness impairs the natural clearing mechanism of the airways, allowing irritants and pathogens to accumulate. This alone is sufficient to sustain postnasal drip and cough in susceptible individuals.

Shisha and secondhand shisha smoke remain significant contributors. Even non-smokers who spend time in shisha cafes or family gatherings where shisha is used are exposed to levels of particulate matter, carbon monoxide and heavy metals that exceed those from cigarette smoke. The UAE's shisha culture means this is not a niche consideration - it is a mainstream exposure worth asking about in every respiratory consultation.

Occupational exposures complete the picture. Sharjah's construction sector, petrochemical facilities and manufacturing industries employ hundreds of thousands of workers exposed to cement dust, silica, industrial fumes and chemical irritants. Occupational chronic cough, including early occupational lung disease, is routinely underdiagnosed because patients do not associate their work environment with a cough that appears weeks or months after the exposure becomes cumulative.

If you have a chronic cough and live or work in the UAE, these factors are not incidental - they are central to understanding what is driving your symptom.

When Is a Cough Serious? Red Flags to Act On Now

Most chronic coughs, once investigated, turn out to have a benign and treatable cause. But some do not - and the following symptoms should prompt an urgent specialist appointment, not a course of cough syrup and a plan to review in a few weeks.

See a pulmonologist promptly if your cough is accompanied by:

• Blood in your sputum - also referred to as haemoptysis or coughing up blood, even in small amounts or streaks
• Unintended weight loss - losing weight without trying, over weeks or months
• Night sweats - consistently waking with drenching sweats not explained by temperature
• Persistent fever - particularly a low-grade fever that has not resolved
• Progressive breathlessness - worsening difficulty breathing over weeks alongside the cough
• A cough lasting more than eight weeks - in the absence of any obvious cause such as a known allergy or recent infection

Any one of these, alone or combined with a persistent cough, warrants assessment by a pulmonologist - not just your GP. These are the symptoms that lung cancer, tuberculosis, pulmonary fibrosis and other serious conditions present with in their early, most treatable stages.

How Chronic Cough Is Diagnosed at Our Clinic

Chronic cough investigation at our pulmonology clinic in Sharjah follows a structured pathway designed to identify the cause methodically rather than guessing.

The initial assessment typically includes:

• Spirometry - to identify airflow obstruction consistent with asthma, COPD or another obstructive pattern. Results are available on the day.
• Chest X-ray - to rule out infection, structural abnormality or obvious masses.
• High-resolution CT scan - for cases where the chest X-ray is inconclusive or where pulmonary fibrosis, bronchiectasis or early malignancy needs to be assessed in detail.
• Allergy and skin-prick testing - particularly relevant for postnasal drip and cough-variant asthma driven by environmental allergens common in the UAE.
• GERD assessment - a detailed history and, where indicated, a trial of acid-suppression therapy or referral for pH monitoring.

A review of all current medications - particularly any blood pressure medicines - is part of every first consultation. In a meaningful number of cases, stopping or switching an ACE inhibitor resolves a chronic cough within two to four weeks without any further investigation.

All of these diagnostic tools are available at Sheikh Sultan Bin Zayed Hospital without the need for multiple external referrals, which significantly reduces the time between first presentation and confirmed diagnosis.

Can a Chronic Cough Be Cured?

In most cases, yes - once the cause is correctly identified.

Postnasal drip responds well to nasal corticosteroid sprays and antihistamines. Cough-variant asthma is managed with the same inhaled preventer therapy used for classic asthma, often with rapid improvement. GERD-related cough resolves with appropriate acid suppression and dietary modification. ACE inhibitor cough disappears when the medication is switched. Even post-COVID cough, in the majority of cases, improves with targeted airway anti-inflammatory treatment and time.

The causes that are harder to resolve - pulmonary fibrosis, advanced COPD, interstitial lung disease - require long-term management rather than a cure, but even here, structured specialist care significantly improves quality of life and slows progression.

The common thread in every case is this: the key is getting an accurate diagnosis - and that starts with a specialist consultation at our pulmonology clinic in Sharjah.