What is chronic cough?
A cough is classed as chronic when it persists beyond eight weeks. It is one of the most common reasons for respiratory referral and can be exhausting — disturbing sleep, straining muscles and causing real social embarrassment. In non-smokers with a normal chest X-ray, the usual culprits are cough-variant asthma, acid reflux, post-nasal drip from nose and sinus problems, and ACE-inhibitor blood pressure tablets; some people have 'cough hypersensitivity', where the cough reflex itself has become oversensitive.
Chronic cough affects all ages but is most common in middle-aged women. Assessment starts with a history, examination and chest X-ray, then targeted tests — spirometry, FeNO, sometimes CT scanning or reflux studies — often alongside sequential treatment trials for the likeliest causes.
Common symptoms
- A cough persisting for more than eight weeks
- Coughing fits triggered by talking, laughing or cold air
- A tickle or irritation in the throat
- Disturbed sleep from night-time coughing
- Hoarse voice
- Retching or urinary leakage during severe coughing bouts
How long will you wait?
Once red flags are excluded, a routine NHS respiratory referral for chronic cough typically waits several months, and because the work-up often proceeds step by step across clinics and tests, reaching a firm diagnosis can take considerably longer.
Privately, you can typically see a respiratory consultant within 3–7 days, with chest imaging, spirometry and FeNO completed within 1–2 weeks.
NHS England median referral-to-treatment wait: 12.4 weeks, with 2.5 million people waiting over 18 weeks (May 2026). Individual waits vary by trust and urgency.
Treatment options
- Treating the underlying cause. Asthma treatment, reflux therapy, nasal sprays or stopping an ACE inhibitor resolves the cough where a cause is identified.
- Trial-based therapy. Sequential treatment trials for the most likely causes are a legitimate diagnostic strategy when initial tests are normal.
- Speech and language therapy. Specialist cough-control techniques reduce the hypersensitive cough reflex and are effective for refractory cough.
- Neuromodulator medication. Low-dose drugs that calm the oversensitive cough reflex, used by specialists for persistent unexplained cough.
What does private treatment cost?
As a guide, a private consultation with chest X-ray and lung function testing typically costs £400–£800, with a chest CT scan adding £400–£800 if required.
Does health insurance cover chronic cough?
Private medical insurance handles chronic cough well at the diagnostic stage — consultations, imaging and breathing tests to establish the cause are usually covered as investigation of new symptoms. What happens next depends on the diagnosis: treatment of an acute cause is covered, but if the cough turns out to reflect a chronic condition such as asthma or reflux, ongoing medication and management fall outside cover under standard chronic-condition rules.
Frequently asked questions
When should a cough be investigated?
Any cough lasting more than three weeks deserves a GP review, and more than eight weeks merits investigation, starting with a chest X-ray. Seek assessment sooner if you cough up blood, have chest pain, unexplained weight loss, night sweats, worsening breathlessness, or you smoke or used to smoke — these features need prompt tests to exclude serious causes, including lung cancer, which is most treatable when caught early.
Why can nobody find a cause for my cough?
In a proportion of people, standard tests for asthma, reflux and nasal disease come back normal — a situation now recognised as refractory or unexplained chronic cough, thought to involve an oversensitised cough reflex, a little like nerve-related chronic pain. This is a genuine diagnosis, not a dead end: speech therapy techniques and low-dose neuromodulator medicines help many patients, and new targeted drugs are emerging.
Can acid reflux really cause a cough without heartburn?
Yes — so-called silent reflux is a well-recognised cause of chronic cough. Small amounts of stomach contents or even vapour reaching the throat can trigger the cough reflex without any burning sensation. Clues include a cough that is worse after meals, on lying down or first thing in the morning, and a hoarse voice. Treatment combines acid suppression with dietary and lifestyle measures, though response can take weeks.