15048 Chronic Cough Overview

Overview

A cough is a reflex that protects your airways by clearing away mucus, dust, or germs. A cough is called 'chronic' when it hangs on for a long time — usually more than 8 weeks in adults, or more than 4 weeks in children. Chronic means long-lasting, not necessarily serious. Most of the time a long cough has an identifiable and treatable cause, such as irritation from smoking, asthma, acid reflux, or drainage from the nose and sinuses.

Yes. Chronic cough is very common. Studies suggest roughly 1 in 10 adults has a cough that lasts for weeks or months at some point. It is one of the most frequent reasons people see a GP or family doctor.

It affects adults of all ages but is more common in middle-aged and older adults, and in women, especially around and after menopause. It is also more common in people who smoke, people with asthma, allergies, or acid reflux, people exposed to dust or fumes at work, and children who attend daycare or who are around smokers. Babies and young children are more prone to long coughs after viral infections.

Symptoms

Common symptoms

• A cough that keeps going for weeks or months
• A dry, tickly cough or a chesty cough that brings up mucus
• Coughing more at night or first thing in the morning
• A constant need to clear your throat
• A hoarse or scratchy voice
• A tickle in the throat or a feeling of something stuck there
• Feeling short of breath or wheezy
• Heartburn or a sour taste in the mouth (acid reflux)
• A blocked or runny nose, or mucus dripping down the back of the throat
• Feeling tired or worn out from poor sleep
• Muscle aches or soreness in the chest or ribs from coughing
• Leaking a little urine when you cough

Symptoms in children

• A cough lasting more than 4 weeks
• Coughing at night or during play or exercise
• Coughing with feeding, or vomiting after a coughing fit
• A 'whooping' sound or long gasping breaths between coughs
• Wheezing or noisy breathing
• Poor weight gain or feeding difficulties
• A cough that starts suddenly while eating or playing with small objects (possible choking)

Symptoms in older adults

• A cough that is more likely to be linked to long-term lung disease or heart problems
• Weaker cough strength, so mucus is harder to clear
• Feeling dizzy or light-headed during coughing bouts, which raises the risk of falls
• Leaking urine or bowel problems triggered by coughing
• A dry cough that started after a change in blood pressure medicine (tell your doctor)
• Dehydration or poor appetite linked to breathlessness while eating

Causes

Main causes

• Smoking or vaping, including secondhand smoke
• Asthma, especially a cough that is worse at night or with exercise
• Acid reflux — stomach acid rising into the throat and triggering a cough
• Post-nasal drip (mucus running down the back of the throat) from allergies, colds, or sinus problems
• A recent viral infection — a cough can linger for weeks after you feel better
• Long-term lung conditions such as COPD (chronic obstructive pulmonary disease) or bronchiectasis (damaged, widened airways)
• Some blood pressure medicines can cause a dry, tickly cough — ask your doctor or pharmacist about your medicines
• Whooping cough (pertussis) and other bacterial infections
• Workplace dust, fumes, or chemicals
• Cough hypersensitivity syndrome — an over-sensitive cough reflex
• Less common causes such as heart problems, an overactive thyroid, or, rarely, lung cancer
• In children: enlarged tonsils or adenoids, foreign objects, or habitual coughing after an infection

Risk factors

• Smoking or living with someone who smokes
• Having asthma, eczema, or allergies (hay fever)
• Frequent heartburn or acid reflux
• Working with dust, flour, chemicals, or fumes
• Living in an area with high air pollution
• Being overweight
• A recent chest infection or flu-like illness
• Taking certain medicines, especially some blood pressure tablets
• Being middle-aged or older, and being female (for cough hypersensitivity)
• Children in daycare or with older siblings at school

When to see a doctor

See a doctor urgently if:

• You are coughing up blood
• You have a high fever, shaking chills, and feel very unwell
• You are becoming more breathless, or breathless when resting
• You have chest pain when breathing or coughing
• You have unexplained weight loss, night sweats, or a lump in the neck
• The cough started after a choking episode
• Your voice has changed and has not returned to normal within a few weeks

Book a routine appointment if:

• Your cough has lasted more than 8 weeks (adults) or more than 4 weeks (children)
• The cough is affecting your sleep, work, or daily life
• You notice a pattern — for example, coughing at night, after meals, or with exercise
• You are coughing up mucus most days
• You have repeated chest infections
• You have started a new medicine and a dry cough began soon afterwards
• You are a smoker or ex-smoker with a new or changing cough

Diagnosis

Your doctor will start by talking with you about your cough: how long it has lasted, whether it is dry or brings up mucus, what makes it better or worse, and whether you have other symptoms like heartburn, nasal congestion, or breathlessness. They will ask about your medicines, your home and workplace, and whether you smoke. Then they will examine your chest with a stethoscope and check your throat, nose, and ears. Often the first step is trying a treatment for the most likely cause and seeing whether the cough improves.

Tests that may be done

• Chest X-ray to look at your lungs
• Spirometry — a breathing test where you blow into a tube to check how well your lungs work
• Blood tests, including a full blood count and sometimes allergy tests
• A sputum (phlegm) sample to check for infection
• A test to look for signs of asthma, sometimes called a FeNO test, or a trial of asthma treatment
• A CT scan of the chest if the X-ray is unclear or if there are warning signs
• A camera test of the nose and throat (endoscopy) by an ear, nose, and throat specialist
• A test for acid reflux, such as measuring acid in the food pipe over 24 hours
• A bronchoscopy — a thin flexible camera passed into the airways, used only when needed

What to expect at your appointment

You may not get an answer at your first visit. It is common for your doctor to suggest one treatment, wait a few weeks, and then try another if the cough has not improved. This step-by-step approach is normal and helps avoid unnecessary tests. Keep a simple diary of when your cough is worse — this genuinely helps your doctor.

Treatment

The best treatment depends on the cause. Rather than simply silencing the cough, doctors aim to treat what is triggering it. This might mean stopping smoking, treating asthma or reflux, dealing with nasal allergies, changing a medicine that is causing the problem, or referring you to a physiotherapist or speech and language therapist if your cough reflex has become over-sensitive. Always check with your doctor or pharmacist before trying any over-the-counter cough remedy.

Self-care at home

• If you smoke, stopping is the single most helpful step — ask your doctor or pharmacist for support
• Drink plenty of fluids to keep mucus thin and easier to clear
• Try a spoonful of honey in warm water (safe for adults and children over 1 year old — never give honey to babies under 1)
• Keep rooms humid and avoid dry, smoky, or chemically scented air
• Sleep with your head slightly raised if you have reflux or a night-time cough
• Avoid known triggers such as dust, pet dander, strong perfumes, and cold air
• Rest your voice and avoid constant throat clearing, which can make irritation worse
• Use a scarf over your nose and mouth in cold weather
• Manage stress and get enough sleep — tiredness makes cough feel worse

Medical treatments

Treatment is aimed at the cause. For asthma or COPD, doctors may prescribe inhalers that reduce airway swelling and open the breathing tubes. For nasal allergy or post-nasal drip, nasal sprays and antihistamine-type medicines can help. For acid reflux, doctors may suggest acid-reducing medicines along with lifestyle changes. If a blood pressure medicine is the likely culprit, your doctor may switch you to a different one — never stop a medicine on your own. Antibiotics are used only when a bacterial infection is found. For an over-sensitive cough reflex, a specialised cough clinic can offer breathing exercises and a type of talking therapy that helps reset the cough reflex. Cough medicines may be suggested for short-term relief but are not a cure; your pharmacist can advise on what is suitable and safe for you, including interactions with other medicines.

When is surgery considered?

Surgery is rarely needed for chronic cough. It may be considered in specific situations — for example, removing enlarged tonsils or adenoids in a child, correcting a structural problem in the nose or airways, or treating a condition such as severe reflux or a lung problem that has not responded to other treatment. Your specialist would discuss this with you in detail if it applied to you.

Living with this condition

A long cough can be exhausting and can affect sleep, work, exercise, and social life. Try to pace yourself, build in rest, and let family, friends, or colleagues know what is happening so they can support you. Small changes — like keeping water nearby, avoiding smoky places, and planning rest after activities — can make a real difference.

Lifestyle tips

• Stop smoking and avoid secondhand smoke; ask for help if you need it
• Keep a diary of triggers so you can plan around them
• Use a humidifier or bowl of water near radiators if the air is dry
• Do gentle exercise such as walking, which helps keep your lungs working well
• Avoid alcohol late at night if reflux makes your cough worse
• Practise relaxed breathing exercises when a coughing bout starts
• Keep up to date with recommended vaccinations
• Wash your hands often and avoid close contact with people who have active chest infections

Diet and exercise

There is no special diet that cures a chronic cough, but eating smaller, lighter meals and avoiding very spicy, fatty, or acidic foods can reduce reflux-related coughing. Avoid eating within 2–3 hours of bedtime. Regular gentle activity — walking, swimming, cycling, or whatever you enjoy — supports lung and heart health and helps with sleep and mood. If exercise triggers your cough, mention it to your doctor; it may point to asthma, which is treatable.

Mental health and emotional wellbeing

A cough that will not go away can be frustrating, embarrassing, and isolating. It can disrupt sleep, cause anxiety about coughing in public, and lower mood. These feelings are common and worth mentioning to your doctor. If your mood is low or you feel anxious much of the time, support is available — talk to your GP, who can point you to talking therapies or counselling.

Prevention

Not all chronic coughs can be prevented, but you can lower your risk. Not smoking (and avoiding secondhand smoke) is the most important step. Keeping asthma, allergies, and reflux well controlled also helps, as does protecting your lungs at work with proper ventilation and protective equipment. Treating chest infections early and staying physically active support overall lung health.

Vaccines

Staying up to date with recommended vaccinations can prevent infections that cause long-lasting coughs. These may include flu, COVID-19, pneumococcal, and whooping cough (pertussis) vaccines. Which ones are right for you depends on your age, health, and where you live — ask your doctor or pharmacist.

Screening programmes

There is no routine screening test for chronic cough itself. However, some countries offer lung cancer screening (usually a low-dose CT scan) for people at higher risk, such as older adults with a long smoking history. Ask your doctor whether you are eligible where you live.

Complications

If left untreated

• Poor sleep and ongoing tiredness
• Leaking urine (incontinence) or pelvic floor strain from repeated coughing
• Sore chest muscles, and rarely a cracked rib
• Dizziness or falls during coughing bouts, particularly in older adults
• Spread of infection to others if the cause is contagious, such as whooping cough
• Worsening of an underlying lung condition if it is not treated
• Embarrassment, social withdrawal, and low mood

Long-term outlook

The outlook is generally good. In most people, a cause is found and the cough improves with treatment, or it settles with time. Some people have a cough that is over-sensitive and takes longer to calm down, but even then, breathing exercises and specialised therapy often help a great deal. Seeing your doctor early gives you the best chance of finding relief sooner.

Find support

External links open third-party websites. Ruqelo Health is not responsible for external content. Listing an organisation does not imply endorsement.