Cough
Informed by recognized medical guidance
Overview
A cough is your body's way of clearing your airways of mucus, dust, or other irritants. It is a reflex, not a disease itself, but it can be a symptom of many different conditions.
Key facts
- Most coughs go away on their own within 3 weeks.
- A cough that lasts longer than 8 weeks is called a chronic cough.
- Coughing helps protect your lungs from infection and foreign particles.
Very common. Almost everyone experiences a cough from time to time, especially during cold and flu season.
People of all ages, but children under 5, older adults, and people with chronic lung conditions are more likely to have a cough that lasts longer.
Symptoms
- Difficulty breathing or fast breathing
- Coughing up blood (more than a few streaks)
- Blue lips or face
- Choking that won't stop
- Severe chest pain or tightness
- ⚠High fever (over 38.5°C) that does not come down
- ⚠Cough after a choking episode
- ⚠Cough that causes vomiting or inability to keep liquids down
- ⚠Swelling of the neck or face
- ⚠Sudden onset of wheezing
Common symptoms
- A repeated forceful expulsion of air from the lungs
- Tickle or irritation in the throat
- Coughing up mucus (phlegm)
- Dry hacking cough with no mucus
Symptoms in children
- Cough that is worse at night or with activity
- A barking cough (croup)
- Cough with a runny nose and slight fever
- Refusing to drink fluids due to coughing
Symptoms in older adults
- Weak cough that doesn't clear lungs
- Confusion or dizziness from coughing fits
- Cough that lasts longer than 2 weeks
- Fatigue and poor appetite
Causes
Main causes
- Common cold or flu
- Smoking or exposure to second-hand smoke
- Asthma
- Allergies such as hay fever
- Gastro-oesophageal reflux disease (heartburn)
- Infections like bronchitis or pneumonia
- Whooping cough (pertussis)
Risk factors
- Smoking or vaping
- Living with a smoker
- Having a weakened immune system
- Living in a city with high air pollution
- Taking certain medicines (like ACE inhibitors for blood pressure)
- Being around mould or dust at work
When to see a doctor
See a doctor urgently if:
- Cough that lasts more than 3 weeks
- Cough with high fever, rapid breathing, or chest pain
- Cough with a weakened immune system (e.g., chemotherapy)
- Cough that brings up thick yellow or green mucus for more than a week
Book a routine appointment if:
- Mild cough that is not interfering with sleep or daily life
- Cough after starting a new medicine that is not severe
Diagnosis
Your doctor will ask about your symptoms and examine you. They may listen to your lungs with a stethoscope.
Tests that may be done
- Chest X-ray to look for lung infections or other problems
- Spirometry (blowing into a tube) to check for asthma or COPD
- Blood tests to look for signs of infection or allergy
- Sputum culture (testing mucus) for bacteria
What to expect at your appointment
The doctor will ask how long you've had the cough, when it happens, and what makes it better or worse. You do not need to do anything special before the visit.
Treatment
Treatment depends on the cause. Most coughs from colds or flu go away on their own. For other causes, treating the underlying condition usually helps the cough.
Self-care at home
- Drink plenty of fluids warm or cool
- Rest and sleep with your head slightly raised
- Use a humidifier or take a steamy shower
- Suck on a teaspoon of honey (for adults and children over 1 year)
- Sip warm tea with lemon and honey
Medical treatments
If the cough is due to asthma, your doctor may prescribe inhalers. For bacterial infections like pneumonia, antibiotics may be needed. For acid reflux, medicines that reduce stomach acid can help. For allergic coughs, antihistamines are an option. Your doctor will choose the best treatment for your specific cause.
When is surgery considered?
Very rarely needed. Surgery might be considered if a cough is caused by a structural problem, such as a large tumour or a foreign object stuck in the airway.
Living with this condition
A persistent cough can be tiring and frustrating. Try to stay hydrated, avoid irritants like smoke, and use simple remedies like honey or lozenges. If you cough at night, sleep with an extra pillow.
Lifestyle tips
- Stop smoking and avoid second-hand smoke
- Use an air purifier if you have allergies
- Wash hands often to prevent infections
- Cover your mouth with your elbow when you cough
Diet and exercise
Eat a balanced diet rich in fruits and vegetables to support your immune system. Gentle exercise like walking can help, but avoid strenuous activity if you have a fever or feel very unwell.
Mental health and emotional wellbeing
A chronic cough can affect your sleep, work, and social life. It can cause anxiety or low mood. Talking to your doctor about ways to manage the cough can help you feel more in control.
Prevention
Many coughs caused by infections can be prevented with good hygiene, like handwashing and avoiding close contact with sick people. Quitting smoking greatly reduces your risk of chronic cough.
Vaccines
Getting vaccinated against flu, whooping cough, and pneumococcal disease can prevent some causes of cough. The whooping cough vaccine is given to babies and pregnant women.
Screening programmes
There is no routine screening for cough, but if you have a chronic cough or other risk factors, your doctor may recommend a lung function test or CT scan.
Complications
If left untreated
- Pneumonia (lung infection)
- Chest muscle strain or rib fracture from severe coughing
- Sleep deprivation and fatigue
- Lightheadedness or fainting
- Incontinence (especially in women)
- Worsening of an underlying condition like asthma or COPD
Long-term outlook
The outlook for a cough is generally excellent. Most coughs resolve on their own or with simple treatments. Even chronic coughs can be managed effectively once the cause is identified.
Find support
International organisations
Local organisations
- Asthma + Lung UK ↗ · UK
Helplines
External links open third-party websites. Ruqelo Health is not responsible for external content. Listing an organisation does not imply endorsement.
Always verify with your doctor
Health guidelines vary by country and region. The information in this article is based on international clinical guidelines but may not reflect the specific guidelines, medications, or practices in your country. Always discuss your health concerns with your own doctor or healthcare provider, and refer to your local national health guidelines where available.
Important notice This information is for educational purposes only. It does not replace professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider about your specific situation. If you are experiencing a medical emergency, call your local emergency services immediately.
Related conditions
Sources and guidance
This article is educational and is prepared with reference to recognized health information and clinical guidance sources where available. Specific source links may vary by topic.
Last updated: July 16, 2026
Educational note: This information is for education only and is not a diagnosis.
Use it to support, not replace, advice from a licensed clinician.
If symptoms are severe, worsening, or urgent, call your local emergency number or seek emergency care.
Guidance may differ by country or region. Confirm local recommendations with a qualified healthcare provider.