What causes a chronic cough?

A cough lasting more than eight weeks is considered chronic. The three most common causes in non-smoking adults are: upper airway cough syndrome (postnasal drip from rhinitis or sinusitis), gastro-oesophageal reflux disease (GORD), and cough-variant asthma. Other causes include ACE inhibitor medication side effects, eosinophilic bronchitis, and — importantly — any new or worsening cough warrants investigation to exclude underlying lung pathology.

Can complementary therapies help chronic cough?

Approaches depend on the underlying cause. Where reflux contributes, dietary and lifestyle modifications are highly relevant (weight management, avoiding triggers, elevating the head of bed). Where allergy or rhinitis drives postnasal drip, acupuncture and anti-inflammatory approaches are relevant. Speech and language therapy addresses the cough hypersensitivity and habituation components. Honey has evidence for cough relief in upper respiratory tract infections.

What dietary changes help GORD-related cough?

Reducing triggers — including fatty foods, coffee, alcohol, chocolate, citrus, tomato, and large meals — and not eating within three hours of bedtime. Maintaining a healthy weight, stopping smoking, and elevating the head of the bed may significantly reduce reflux and associated coughing. A nutritional therapist can advise on an individualised anti-reflux dietary plan.

When does a chronic cough require urgent investigation?

New-onset cough in a smoker or former smoker, cough accompanied by blood, unexplained weight loss, night sweats, chest pain, or breathlessness, or cough that is progressive and worsening should be investigated promptly to exclude underlying pulmonary pathology including lung cancer. Do not delay investigation in the presence of these warning signs.

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Chronic Cough

Chronic cough persisting beyond eight weeks may reflect post-nasal drip, acid reflux, asthma, or hypersensitive cough reflex. Identifying the underlying cause is essential; holistic approaches address inflammatory, diges

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Reviewed by Dr. Ciara Magee · Integrative Midwifery26 March 2026

Quick answer

Do any of these feel familiar?

Chronic cough is typically experienced as a persistent, dry, or productive cough lasting more than eight weeks that can feel relentless and exhausting
For many, it disrupts sleep, causes social embarrassment, and makes normal conversation or activity difficult
Physical effects including chest soreness, hoarseness, and headaches from repeated coughing effort are common
Many people describe the cough as involuntary and uncontrollable, which can trigger anxiety in social situations
The condition often follows a respiratory illness or can be driven by reflux, post-nasal drip, or medication side effects