Chronic Cough: Common Causes, When to See a Doctor & Treatment Guide for Hyderabad

A cough that persists for more than 8 weeks — despite a normal chest X-ray — is one of the most common and frustrating medical complaints. Most patients with chronic cough are told they have 'allergies' or given repeated antibiotic courses that do not help. The reality is that chronic cough has three main treatable causes — and identifying the right one is the key to cure.

Acute vs Subacute vs Chronic Cough

• Acute cough (under 3 weeks): Usually viral URTI — common cold, flu, COVID-19. Treat symptoms, not with antibiotics
• Subacute cough (3–8 weeks): Often post-infectious airway hypersensitivity or whooping cough (pertussis)
• Chronic cough (over 8 weeks): Has specific causes — see a doctor for evaluation

The Three Main Causes of Chronic Cough in Non-Smokers

1. Upper Airway Cough Syndrome (Post-Nasal Drip)

Chronic rhinitis or sinusitis causes mucus to drip from the back of the nose into the throat — triggering a constant cough, often described as a 'tickle in the throat'. Clues: nasal congestion, frequent throat clearing, sensation of mucus at the back of the throat, worse in the morning.

Treatment: Intranasal corticosteroid spray + antihistamine. Saline nasal rinse. Avoid triggers (dust, pollen, smoke).

2. Gastroesophageal Reflux (GERD)

Acid reflux from the stomach irritates the airways — causing chronic cough, often without classic heartburn. 'Silent reflux' (laryngopharyngeal reflux) is particularly tricky — patients may not realise they have acid reflux at all. Clues: worse after meals, lying down, or bending; voice hoarseness; sour taste; worse with spicy or fatty food.

Treatment: Proton pump inhibitor (omeprazole/pantoprazole) for 8–12 weeks, lifestyle changes (elevate head of bed, avoid eating 3 hours before bed, reduce spicy food, coffee, alcohol). The cough may take 8–12 weeks to fully resolve.

3. Cough-Variant Asthma or Eosinophilic Bronchitis

Asthma can present purely as chronic cough — without wheezing or shortness of breath. This 'cough-variant asthma' is common and frequently missed. Clues: cough triggered by cold air, exercise, or strong smells; responds to bronchodilator inhaler; may have a personal or family history of asthma or eczema.

Treatment: Inhaled bronchodilator (salbutamol) trial, then inhaled corticosteroid if confirmed. Referral to respiratory medicine if needed.

ACE Inhibitor Cough — Check Your Medication

Ramipril, enalapril, perindopril, lisinopril — ACE inhibitors used for blood pressure and heart failure — cause a dry, persistent cough in up to 15–20% of patients. This is a class effect, not an allergy. The cough stops within 1–4 weeks of switching to an ARB (telmisartan, olmesartan). If you take an ACE inhibitor and have a chronic cough — this is the first thing to check.

When Is a Chronic Cough Dangerous?

See a doctor urgently for any cough with:

• Blood (haemoptysis) — even small amounts
• Unexplained weight loss
• Night sweats
• Hoarse voice that is persistent and progressive
• Difficulty swallowing
• Cough in a smoker over 40 that has changed character
• Chest pain or shortness of breath

These require urgent chest X-ray and further investigation to exclude malignancy or TB.

A Systematic Approach Works

Dr. Anand Karnam at Sri Anand CNC evaluates chronic cough systematically — checking for post-nasal drip, GERD, and asthma, reviewing medications, and arranging chest X-ray and spirometry where indicated. Most patients with chronic cough are cured or significantly improved within 8–12 weeks of the right treatment.

Call Sri Anand CNC, Chanda Nagar, Hyderabad: +91 90633 66983.