cough at night

Overview

A cough at night is a cough that happens mainly or only when you lie down to sleep. It can be dry or bring up mucus. It may wake you up or keep you from falling asleep.

Yes, many people experience a cough at night at some point. It is a common symptom of several health conditions.

Anyone can have a night cough, from babies to older adults. It is especially common in people with allergies, asthma, acid reflux, or who smoke.

Symptoms

Common symptoms

• A cough that starts or gets worse when you lie down
• Dry, tickly cough or a cough that brings up mucus
• Coughing episodes that wake you from sleep
• Feeling like you need to clear your throat
• Wheezing or a whistling sound when breathing

Symptoms in children

• A loud, barking cough (often from croup)
• Coughing fits that end with a whooping sound (whooping cough)
• Cough with vomiting (can happen with asthma or infection)
• Cough that is worse at night and improves during the day

Symptoms in older adults

• Cough with pink, frothy mucus (may be a sign of heart failure)
• Persistent cough as a side effect of certain blood pressure medicines (ACE inhibitors)
• Cough along with shortness of breath or ankle swelling

Causes

Main causes

• Postnasal drip: mucus from the nose drips down the back of the throat when you lie down
• Asthma: airways tighten and become inflamed, often worse at night
• Gastro-oesophageal reflux disease (GERD): stomach acid flows back into the throat while lying flat
• Respiratory infections: cold, flu, bronchitis, or pneumonia can cause a cough that is worse at night
• Allergies: to dust mites, pet dander, or mould in the bedroom
• Irritants: tobacco smoke, air pollution, or dry air
• Medications: some blood pressure medicines can cause a chronic cough

Risk factors

• Having allergies or asthma
• Smoking or being around second-hand smoke
• Obesity (increases risk of reflux)
• Being a child (more prone to croup and asthma)
• Being an older adult (more likely to have underlying conditions)
• Taking ACE inhibitor medicines for blood pressure

When to see a doctor

See a doctor urgently if:

• If you have any emergency symptoms listed above, call your local emergency number immediately.
• If you have a high fever and difficulty breathing, seek same-day medical care.

Book a routine appointment if:

• If your night cough lasts more than three weeks
• If it disrupts your sleep every night
• If you have other symptoms like weight loss, night sweats, or fatigue
• If your child has a barking cough or whooping cough

Diagnosis

A doctor will ask about your medical history, when the cough happens, and what makes it better or worse. They will listen to your chest with a stethoscope and may examine your nose, throat, and ears.

Tests that may be done

• Chest X-ray (to check for lung infections or other problems)
• Spirometry (a breathing test to check lung function)
• Allergy testing (skin or blood tests)
• pH monitoring (to measure acid in the oesophagus)
• Blood tests (to look for infection or inflammation)

What to expect at your appointment

The doctor will try to find the underlying cause. They may refer you to a specialist, like a lung doctor (pulmonologist) or an ear, nose, and throat doctor (ENT). You may need to keep a cough diary to track symptoms.

Treatment

Treatment focuses on the cause of the night cough. Once the underlying problem is managed, the cough usually improves.

Self-care at home

• Sleep with your head elevated on extra pillows to keep mucus and stomach acid down
• Use a humidifier in your bedroom to add moisture to dry air
• Avoid smoking and second-hand smoke
• Drink warm fluids like herbal tea before bed (not caffeinated)
• For adults, a spoonful of honey can coat the throat and reduce coughing
• Use a saline (salt water) nasal spray or rinse to clear mucus
• Remove allergens like dust mites by washing bedding in hot water and keeping pets out of the bedroom

Medical treatments

Your doctor may recommend treatments such as inhalers for asthma, medicines to reduce stomach acid for reflux, antihistamines or nasal sprays for allergies, or antibiotics if there is a bacterial infection. Cough medicines are not usually advised but may be used short-term if the cough is severe and interferes with sleep. Always follow your doctor's advice.

When is surgery considered?

Surgery is rarely needed. It may be an option for severe acid reflux that does not improve with medicines, or to remove an object stuck in the airway.

Living with this condition

Managing your night cough often means adjusting your sleep environment and habits. Keep your bedroom clean, cool, and well-ventilated. Stay hydrated throughout the day.

Lifestyle tips

• Quit smoking if you smoke
• Avoid eating large meals or spicy foods within 3 hours of bedtime
• Maintain a healthy weight to reduce reflux and breathing problems
• Manage allergies by using dust-proof covers on pillows and mattresses

Diet and exercise

A balanced diet can help your immune system fight infections. Gentle exercise during the day can improve sleep at night. Avoid heavy exercise right before bed.

Mental health and emotional wellbeing

Poor sleep from constant coughing can cause fatigue, irritability, and stress. It is normal to feel frustrated. Talk to your doctor if the cough is affecting your mood or daily life.

Prevention

Some causes can be prevented, but not all. You can reduce your risk by avoiding triggers, practising good hygiene, and treating conditions like allergies or reflux early.

Vaccines

Vaccines can prevent some infections that cause night cough, such as the flu, whooping cough (pertussis), and pneumonia (for people at risk). Ask your doctor which vaccines are right for you.

Screening programmes

There is no routine screening for night cough. However, if you have ongoing symptoms, your doctor may recommend tests to check for asthma, reflux, or other conditions.

Complications

If left untreated

• Sleep loss and daytime tiredness
• Worsening of the underlying condition (e.g., asthma attack, severe reflux)
• Dehydration (if coughing causes vomiting or you do not drink enough)
• Pneumonia (if an infection spreads)
• In rare cases, a rib fracture from forceful coughing (more common in older adults with weak bones)

Long-term outlook

Most night coughs get better with simple home care and treatment of the cause. Even if the cough is due to a chronic condition, it can usually be controlled so you can sleep well. With proper medical advice, the outlook is very good.

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