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Why am I always coughing? Understanding a persistent cough & what can help

jodi-johnson

Written byJodi M Johnson

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Reviewed byHeeral Tomlinson

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Tired of sleepless nights from a stubborn and persistent cough? Here’s what might be causing it and ways you can ease it

Summary

1What is persistent coughing?

A cough that hangs around and doesn’t seem to ease, even after repeated coughing or clearing your throat.

2Why do I cough at night?

When you lie flat, mucus and phlegm can start to pool at the back of your throat instead of draining naturally.

3I’ve tried everything for my cough – what now?

If your cough won’t go away or it’s lasted longer than three weeks, it’s a good idea to check in with your GP.

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A cough that just won’t quit can be more than annoying – it can steal your sleep, disrupt your day and leave you feeling worn down. Whether it’s you, your partner or your child lying awake at night with a relentless tickle in the throat, you’re not alone – and you’re not out of options. Persistent coughs are surprisingly common and understanding what might be causing yours is the first step toward finding relief. From the possible reasons behind that lingering cough to simple, practical ways to help soothe it at home, here’s what you need to know to start feeling better.

What is persistent coughing?

Coughing is your body’s natural way of protecting itself. It helps clear your airways and lungs of mucus, germs or anything else that might be irritating.1 A persistent cough is different from the occasional throat clear or short coughing spell. It’s a cough that hangs around and doesn’t seem to ease, even after repeated coughing or clearing your throat. This type of cough can strike during the day or disturb your sleep at night and it can have many possible causes.1

Why do I cough at night?

A cough can be frustrating at the best of times, but when it kicks in at night, it can feel especially miserable. Night-time coughing fits can keep you – and everyone else in the house – wide awake, turning rest into another thing you’re missing out on.

“Changing how you sleep may help. Try propping yourself up slightly with an extra pillow so you’re not completely flat”

So why does coughing often get worse after dark? One of the main reasons is simply your sleeping position. When you lie flat, mucus and phlegm can start to pool at the back of your throat instead of draining naturally.2 This can trigger your body’s reflex to cough in an attempt to clear it, but changing how you sleep may help. Try propping yourself up slightly with an extra pillow so you’re not completely flat – this can reduce mucus build-up and make coughing less likely to disturb your sleep.3

8 common causes of a persistent cough

If you have a cold, flu or a chest infection such as bronchitis, coughing is a very common symptom. These illnesses can cause mucus and other fluids to build up in your airways, making them feel blocked or irritated. Your body responds by coughing to help clear the airways and keep your breathing as clear as possible.4

1. An infection

If you have a coldflu or a chest infection such as bronchitis, coughing is a very common symptom. These illnesses can cause mucus and other fluids to build up in your airways, making them feel blocked or irritated. Your body responds by coughing to help clear the airways and keep your breathing as clear as possible.4
 

2. Asthma

Asthma can cause the airways to become inflamed and narrowed, which makes breathing more difficult. This irritation can cause some people with asthma to develop a persistent and dry cough, even when they’re not experiencing other obvious symptoms.5
 

3. Indigestion

Indigestion (often linked to heartburn) can sometimes trigger a cough. This happens when stomach acid rises into the chest or throat, causing irritation. Alongside coughing, you may also notice a burning sensation in your chest, especially after eating or when lying down.6
 

4. An allergy

Coughing is a common symptom of many allergies, including dust allergies, hay fever and pet allergies. When you come into contact with an allergen, it can irritate your airways and trigger coughing as your body tries to protect itself.7
 

5. Smoking

Smoking can irritate and damage the airways over time, which is why long-term smokers often develop a lingering, chesty cough. The good news is that once you stop smoking, this type of cough usually improves gradually as your lungs begin to recover.8
 

6. Postnasal drip (AKA upper airway cough syndrome)

Postnasal drip happens when excess mucus from the nose runs down the back of the throat. This can irritate sensitive nerves in the upper airway, creating a tickly sensation that triggers coughing. It’s often linked to a blocked or runny nose, but it can also develop during or after a viral upper respiratory infection, such as a cold.9
 

7. Gastro-esophageal reflux disease (GERD)

GERD occurs when stomach contents flow back up into the oesophagus instead of moving down into the intestine. This often causes heartburn, but in some cases, the acid can irritate the lower oesophagus enough to trigger a cough. For some people, GERD may also lead to symptoms like hoarseness (laryngitis) or an ongoing sore throat, even when there’s no obvious cause.10
 

8. Chronic bronchitis

Chronic bronchitis develops when the bronchial tubes become persistently inflamed and narrowed, often leading to a build-up of excess mucus.11 This ongoing irritation makes coughing a common symptom. The condition is most commonly linked to smoking or long-term exposure to air pollutants, such as industrial fumes or dust.
 

How to support throat comfort

Try a humidifier

Dry, heated air can irritate your airways and make a cough feel worse. Using a humidifier (sometimes called an air vapouriser) can help by adding moisture back into the air. It releases a fine mist into the room, which may soothe irritated airways and make breathing and coughing feel more comfortable.12

“Staying hydrated is one of the simplest ways to help a cough. Fluids – especially warm drinks like tea, chicken soup or water – can help soothe a sore throat”

Stay hydrated

Staying hydrated is one of the simplest ways to help a cough. Fluids – especially warm drinks like tea, chicken soup or water – can help soothe a sore throat, support your immune system and sometimes ease coughing caused by dehydration.

A comforting option is a warm drink with honey and lemon, especially before bed. Honey has natural antibacterial properties and may calm a sore throat, while lemon adds a squeeze of vitamin C.13 You could also try a spoonful of Manuka honey each day or honey and bee-pollen-based lozenges.14

Breathe through your nose

When you’re trying to sleep, aim to breathe through your nose rather than your mouth – as long as it’s not blocked. Nose breathing helps keep your throat moist, reduces irritation and puts less strain on a sore throat, which can make a dry cough feel less bothersome at night.15

Throat lozenges or cough drops

Many throat and cough remedies contain menthol, which can help provide temporary relief. Menthol works by slightly numbing the throat and opening up the airways, which can reduce the urge to cough.16

A spoonful of honey

Honey may bring relief to that tickly feeling in your throat. However, it’s very important not to give honey to children under one year old as it can be unsafe for infants.17

Taking expectorant medication

Expectorants are medicines (or sometimes natural remedies) that help clear mucus from the airways. They’re available over the counter and have been shown in studies to reduce mucus build-up, which can help ease coughing. You may notice ingredients like ‘guaifenesin’ listed on some labels, which is commonly used for this purpose.18

I’ve tried everything for my cough – what now?

If your cough won’t go away or it’s lasted longer than three weeks, it’s a good idea to check in with your GP. They can help identify the cause and may recommend treatments or prescribe medication to ease your symptoms. It’s also important to be alert for warning signs. If your cough comes with a high fever, vomiting, bloody phlegm or trouble breathing, this could indicate a more serious condition. Seek medical attention right away if you or your child experience any of these symptoms.

Cough FAQs

When should I see a doctor for a long-lasting cough?

The NHS suggests you see your GP if you have a cough that lasts more than three weeks.13
 

What is the stop-cough exercise?

This exercise can help calm an overly sensitive cough reflex. By keeping the air around your throat warm and moist and controlling your breathing, you may be able to stop a cough before it starts. Here’s how to do it:19
  • at the first sign of a tickle or urge to cough, cover your mouth with your hand
  • swallow once 
  • hold your breath for a few seconds
  • when you start breathing again, take slow, gentle breaths for at least 30 seconds while keeping your hand over your mouth
  • tell yourself you’re not going to cough
  • finally, take a smooth, normal-sized breath through your nose and remove your hand. If the tickle persists, simply repeat the steps until it eases
 

What’s the difference between a dry cough and a chesty cough?

A dry cough feels tickly and doesn’t bring up any mucus – it’s your body’s way of signalling irritation in your throat. A chesty cough, on the other hand, produces phlegm to help clear your airways and keep your lungs healthy.20
 

The final say

A persistent cough, whether it’s dry, tickly, constant or worse at night, can be frustrating and exhausting, especially if it lingers. Thankfully there are plenty of ways to soothe your throat, ease irritation and take control of your symptoms, no matter what’s causing the cough. Keep an eye on how your cough develops. If it’s not improving with home remedies, seems to be getting worse or comes with other symptoms, it’s time to reach out to your GP. With the right support, you can get to the bottom of the cause and start feeling more comfortable again.

Wondering about vitamins? Check out our favourite vitamins for immune system health and five powerful supplement pairings that are more effective together, according to nutritionists.
Disclaimer – This article provides informational advice and is not a substitute for medical care. Curated by experts for accuracy, we take great care to ensure the information is up-to-date and relevant. However, you should always consult your GP or healthcare professional before using supplements or alternative products, particularly if you have medical conditions or are under supervision.

Sources

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2. Satia I, Wahab M, Kum E, Kim H, Lin P, Kaplan A, et al. Chronic cough: Investigations, management, current and future treatments. Canadian Journal of Respiratory, Critical Care, and Sleep Medicine. 2021 Oct 26;5(6):404–16.
3. Belli S, Prince I, Savio G, Paracchini E, Cattaneo D, Bianchi M, et al. Airway Clearance Techniques: The Right Choice for the Right Patient. Frontiers in Medicine. 2021 Feb 4;8(1).
4. NHS. Common Cold [Internet]. NHS. NHS; 2021. Available from: https://www.nhs.uk/conditions/common-cold/
5. NHS. Symptoms - Asthma [Internet]. NHS. NHS; 2021. Available from: https://www.nhs.uk/conditions/asthma/symptoms/
6. NHS. Heartburn and acid reflux [Internet]. NHS. 2023. Available from: https://www.nhs.uk/conditions/heartburn-and-acid-reflux/
7. Morice AH, Millqvist E, Bieksiene K, Birring SS, Dicpinigaitis P, Ribas CD, et al. ERS guidelines on the diagnosis and treatment of chronic cough in adults and children. European Respiratory Journal [Internet]. 2020 Jan 1;55(1). Available from: https://erj.ersjournals.com/content/55/1/1901136?fbclid=IwAR3dOTFpBQV5Gs02Y7Ep_WR6Od670QNvTivJYnx5gsDsmzJMmAY0AEY1MmU
8. Sitkauskiene B, Dicpinigaitis PV. Effect of Smoking on Cough Reflex Sensitivity in Humans. Lung. 2009 Oct 8;188(S1):29–32.
9. Post-Nasal Drip [Internet]. Muschealth.org. 2025. Available from: https://muschealth.org/medical-services/ent/sinus-center/drainage
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11. Widysanto A, Mathew G. Chronic bronchitis [Internet]. National Library of Medicine. StatPearls Publishing; 2025. Available from: https://www.ncbi.nlm.nih.gov/books/NBK482437/
12. Pieterse A, Hanekom SD. Criteria for enhancing mucus transport: a systematic scoping review. Multidisciplinary Respiratory Medicine. 2018 Jul 6;13(1).
13. NHS. Cough [Internet]. nhs.uk. 2017. Available from: https://www.nhs.uk/conditions/cough/
14. Carter DA, Blair SE, Cokcetin NN, Bouzo D, Brooks P, Schothauer R, et al. Therapeutic manuka honey: No longer so alternative. Frontiers in Microbiology. 2016 Apr 20;7(569).
16. NHS. Sore throat [Internet]. NHS. 2021. Available from: https://www.nhs.uk/conditions/sore-throat/
17. NHS. Foods to avoid giving babies and young children [Internet]. nhs.uk. 2020. Available from: https://www.nhs.uk/conditions/baby/weaning-and-feeding/foods-to-avoid-giving-babies-and-young-children/
18. Albrecht HH, Dicpinigaitis PV, Guenin EP. Role of guaifenesin in the management of chronic bronchitis and upper respiratory tract infections. Multidisciplinary Respiratory Medicine. 2017 Dec;12(1).
19. Stop cough exercise [Internet]. [cited 2026 Feb 18]. Available from: https://www.royalberkshire.nhs.uk/media/4mtpafdw/stop-cough-exercise_jan20.pdf
20. Cough [Internet]. Nhsinform.scot. 2020. Available from: https://www.nhsinform.scot/illnesses-and-conditions/lungs-and-airways/cough/
 

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