Health Resources

Asthma (Children)

What Is Asthma

Asthma is a chronic disease in which the airways (breathing tubes or bronchi) are more sensitive and become narrowed due to inflammation. This makes it harder for air to get through and results in wheezing, coughing and difficulty in breathing. This can happen every week, during exercise, or occasionally with the child appearing well in between episodes.

Asthma can appear at any age.

The most typical presentation of asthma is an attack. The child experiences sudden wheezing, coughing and shortness of breath. These attacks can be mild or severe and may need emergency treatment.

Signs And Symptoms Of Asthma

Symptoms include cough, wheeze (whistling noise in the chest), shortness of breath and tightness of the chest.

These symptoms of asthma can appear suddenly (attacks) or be chronically present (persistent). Persistent symptoms tend to occur in the early hours of the morning and at night. They can also be triggered by exercise. Attacks can be triggered by the common cold, cold air and air pollutants such as pet dander and cigarette smoke.

Diagnosis And Treatment Options For Asthma

The diagnosis of asthma is based on family history and clinical examinations. Special tests may be needed to help in the further evaluation or management of your child's asthma, such as:

  • Spirometry

Spirometry is a lung function test that measures airflow obstruction in asthma. When the diagnosis is unclear, it can be used to support the diagnosis of asthma. It also helps to assess severity and your child's response to treatment. Children above 6 years old are usually able to perform this test reliably.

  • Oscillometry

Oscillometry is a special lung function test that can be used for children between 2 and 6 years old.

  • Exhaled nitric oxide measurements

Exhaled nitric oxide measurements are used to determine the severity of lung inflammation in asthma and the dose of preventer medication required.

  • Allergy tests

Allergy tests are useful in detecting the allergens that your child may be sensitive to. Skin prick tests and blood tests are commonly used to test for asthma. Children of any age, including babies, can undergo allergy testing. Knowing and avoiding the allergens that trigger your child's asthma will help in its control.

The goals of asthma treatment are to control all asthma symptoms, prevent asthma attacks and allow your child to lead a healthy and normal life. Asthma can be controlled in nearly all children with the right management such as:

  • Usage of relievers

These are used during an asthma attack to provide relief. The most commonly used reliever is Salbutamol or Albuterol.

These are called bronchodilators and have the best effect when they are inhaled. They open the airways and relieve symptoms of asthma.

  • Usage of preventers or controllers

These are useful when asthma is persistent, attacks are frequent and/or severe. They help to prevent asthma attacks from happening and are usually inhaled. Some examples include:

    • Fluticasone
    • Salmeterol and Fluticasone
    • Beclomethasone
    • Budesonide

Preventer medications have to be taken every day. Not all children need preventer medications. Ask your doctor if your child needs to use a preventer for his or her asthma.

  • Identification and avoidance of triggers

Your doctor will take a detailed history and discuss with you the avoidance of triggers that may be worsening your child's asthma.

Exercise-Induced Asthma

Exercise-induced asthma is suspected when there is a suggestive history: on exercise, there are symptoms of asthma as described above. It may be confirmed with an exercise challenge test. During the test, your child will run on a treadmill machine until at least 80% of his or her maximum heart rate is achieved and maintained for more than 6–8 minutes.

Your child's lung function will first be assessed before exercising and then at various intervals after he or she has started exercising. If the lung function parameter shows a decrease of at least 12% to 15%, it means that your child has exercise-induced asthma. Children above five years old are usually able to perform this test reliably.

If your child has asthma, the symptoms of exercise-induced asthma can be reduced by managing his or her asthma well. Taking additional medications such as a short-acting bronchodilator spray 15 minutes before exercising is also helpful.

Tips For Taking Care Of Children With Asthma

‚ÄčIf you do not hear any coughing or wheezing and your child is breathing comfortably, there is no need to wake your child from sleep for medications.

Many children improve as they get older. Once asthma is properly controlled, your child should be encouraged to take part in all usual activities. There is no need to restrict activity. With the right medication and care, children with asthma should be able to participate in sports and lead normal active lives. Many outstanding athletes have won Olympics medals despite having asthma.

Please take your child to the Children's Emergency if:

  • His or her breathing is laboured or difficult.
  • Your child is unable to talk.
  • Your child is not responding to the reliever medication and the condition is getting worse.
  • You feel that your child is very sick.

Exercise-Induced Asthma

  • Warming up before exercising and cooling down after exercising can help to reduce or relieve the symptoms.
  • Some exercises like swimming are a good form of exercise to start with as they are less likely to trigger symptoms.
  • It is important to recognise if the exercise is triggering an asthma attack. Your child should stop exercising and get treatment if necessary.
Last updated on
Best viewed with Chrome 79.0, Edge 112.0, Firefox 61.0, Safari 11
National University Health System
  • National University Hospital
  • Ng Teng Fong General Hospital
  • Alexandra Hospital
  • Jurong Community Hospital
  • National University Polyclinics
  • Jurong Medical Centre
  • National University Cancer Institute, Singapore
  • National University Heart Centre, Singapore
  • National University Centre for Oral Health, Singapore
  • NUHS Diagnostics
  • NUHS Pharmacy
  • Yong Loo Lin School of Medicine
  • Faculty of Dentistry
  • Saw Swee Hock School of Public Health
Back to Top