asthma flare ups

Overview

An asthma flare-up (also called an asthma attack) is when your usual asthma symptoms suddenly get worse — like coughing, wheezing, chest tightness, and trouble breathing. It happens when the airways in your lungs become more swollen and narrow than usual.

Yes. Asthma flare-ups are very common, especially in people who have asthma. Most people with asthma will experience a flare-up at some point.

Asthma flare-ups can affect anyone with asthma, but they are more common in children, people with poorly controlled asthma, and people who smoke or are exposed to triggers like pollen or cold air.

Symptoms

Common symptoms

• Shortness of breath
• Wheezing (a whistling sound when breathing)
• Coughing, especially at night or early morning
• Tightness or pressure in the chest
• Difficulty sleeping because of breathing problems

Symptoms in children

• Faster or noisy breathing
• Trouble feeding or sucking (in babies)
• Tiredness and less interest in playing
• Coughing or wheezing during exercise
• Sucking in the skin between ribs with each breath

Symptoms in older adults

• Feeling breathless with everyday activities
• Increased confusion or drowsiness
• Rapid breathing
• Chest tightness that may feel like heart problems
• Less obvious wheezing, sometimes only a persistent cough

Causes

Main causes

• Inflammation and swelling in the lining of the airways
• Muscles around the airways tightening (bronchospasm)
• Extra sticky mucus building up and blocking the airways

Risk factors

• Viral infections like colds or flu
• Allergens such as pollen, dust mites, or pet dander
• Smoke, air pollution, or strong fumes
• Cold air or sudden weather changes
• Exercise, especially in cold or dry air
• Stress or strong emotions

When to see a doctor

See a doctor urgently if:

• If you are using your reliever inhaler every few hours or more
• If symptoms wake you at night more than once a week
• If you feel your asthma is getting worse day by day

Book a routine appointment if:

• If you have never been diagnosed with asthma but have repeated breathing symptoms
• If your current asthma treatment is not controlling your symptoms
• If you need to update your asthma action plan

Diagnosis

A doctor will ask about your symptoms, listen to your chest, and may do breathing tests to see how well your lungs are working.

Tests that may be done

• Spirometry: you blow into a tube to measure how much air you can exhale
• Peak flow test: a small device measures how fast you can blow air out
• Allergy tests: to check if allergens are triggering your symptoms

What to expect at your appointment

The tests are simple and painless. Your doctor may ask you to take medicine before or after the test to see how your airways respond. You will get clear instructions and results in plain language.

Treatment

Treating a flare-up focuses on quickly opening your airways and reducing inflammation. Then you and your healthcare team work on preventing future flare-ups with a personal action plan.

Self-care at home

• Use your reliever inhaler exactly as your doctor or asthma nurse has shown you
• Sit upright or lean slightly forward — do not lie down
• Take slow, steady breaths and try to stay calm
• Move away from any trigger, such as smoke, strong smells, or pollen
• Loosen tight clothing around your neck and chest

Medical treatments

Doctors often prescribe inhaled medicines to relax the airways (relievers) and daily controller medicines to reduce swelling and prevent symptoms. If a flare-up is severe, you may need oral steroid tablets, oxygen, or other hospital treatments — always follow your healthcare team's advice.

Living with this condition

Learn your early warning signs and keep your written asthma action plan somewhere easy to find. Take your preventer medicines regularly, even when you feel well.

Lifestyle tips

• Avoid known triggers when possible
• Do not smoke and avoid second-hand smoke
• Keep your home as dust- and mould-free as you can
• Get enough sleep and manage stress
• Keep a diary of your symptoms and peak flow readings

Diet and exercise

A healthy, balanced diet supports your lung health. Most people with asthma can exercise safely with the right treatment plan — warm up slowly, and use your reliever inhaler before exercise only if your doctor recommends it.

Mental health and emotional wellbeing

Living with asthma can sometimes cause anxiety or fear, especially around breathing. These feelings are normal. Talking to a counsellor, your doctor, or a support group can make a big difference.

Prevention

You cannot cure asthma, but you can greatly reduce flare-ups by taking your controller medicines as prescribed and avoiding your personal triggers.

Vaccines

Staying up to date with recommended vaccines, such as the annual flu vaccine, can lower your risk of asthma flare-ups caused by respiratory infections.

Complications

If left untreated

• Frequent severe attacks that may require emergency care
• Permanent narrowing and damage to your airways
• Time off work or school and reduced daily activities
• In rare cases, severe untreated attacks can be life-threatening

Long-term outlook

With the right treatment and a clear action plan, most people with asthma can stay active, sleep well, and live a full life. Flare-ups become less scary and less frequent when you know what to do.

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