What Is Asthma?

©2026 The Nemours Foundation/KidsHealth®. Used and adapted under licesnse by Ann & Robert H. Lurie Children's Hospital of Chicago. This information is for general use only.

Asthma is a long-term disease of the airways that carry air to the lungs when we breathe. Asthma symptoms are caused by swelling, irritation, increased mucus, and tightening of the muscles around the airways in the lungs.  

When these symptoms happen, a child with asthma may have trouble breathing and/or develop a tight feeling in the chest. Other asthma symptoms are fast breathing, coughing, wheezing or needing to use extra muscles in the neck, chest, or abdomen to bring air into the lungs.

 


Learn more about asthma in the video below: 

Play video

Make an Appointment

We offer easy online scheduling for your child's allergy and immunology needs. 

What Causes Asthma?

Asthma flares or “attacks” can be triggered by different things. Potential triggers include:

  • Illness
  • Pollutions
  • Dust
  • Mold
  • Animals
  • Pollens
  • Cigarette smoke
  • Cold air
  • Exercise

Exercise is a common trigger of asthma especially in cold air. Usually, symptoms don't appear until the child has been exercising hard for at least five minutes. With proper treatment, children with asthma can be physically active.

Different people have different asthma triggers. Once you know the triggers you can help your child avoid them. If you're not sure what triggers your child’s symptoms, write down what your child was doing and where they were when symptoms occurred.

Removing asthma triggers, prevention, and early treatment of symptoms are the best ways to keep your child healthy.

What Are the Symptoms of Asthma?

Symptoms of asthma are not the same for every child. Some children have symptoms nearly every day and need to take medications. Other children may only have occasional symptoms, 1-2 times a week.

  • Symptoms may include:
  • Coughing
  • Wheezing
  • Shortness of breath (having a hard time breathing)
  • Rapid breathing (breathing very fast)
  • Anxiety
  • Chest tightness

If your child has is experiencing any of the above symptoms, please contact their physician.

How Is Asthma Treated?

Once your child has been diagnosed with asthma, they will be prescribed medications to control their symptoms.

Controller medications are used to prevent symptoms. They decrease the swelling and inflammation in the airways. These medications also reduce mucus build-up in the airways. Reliever medications are used to treat symptoms when they occur. They open narrow airways by relaxing the muscles that constrict them. 

Asthma Medication Delivery

Watch the videos below to learn how to properly administer certain types of asthma medication.

Holding Chamber with Mouthpiece 

Play video

Holding Chamber with Mask

Play video

Helping Your Child Use a Nebulizer Machine

Play video

Helping Your Child Use Nasal Spray

Play video

How Can I Help My Child Prevent Asthma?

Reducing risks is the best way to prevent asthma. Here are some of the ways to do that:

  • Avoid triggers: Common triggers include dust, mold, animals, pollens, cigarette smoke, or cleaning products.
  • Avoid smoke and vape exposure: Secondhand smoke and vape chemicals are the most common irritants for people with asthma. Both can lead to permanent lung damage.
  • Control dust and mold in the home, especially your child’s bedroom: Cover their mattress and pillows with protective dust-mite-proof covers. Vacuum frequently and remove carpeting and rugs in bedroom, if possible.
  • Allergy treatment and testing: Not all kids with allergies have asthma, but allergies are common in those with asthma and can trigger attacks. Talk with child’s physician about safe allergy remedies.
  • Have a written asthma action plan: Your child’s provider can discuss instructions on how to best manage your child’s asthma and provide a written plan to follow.
  • Take your medications regularly: Control medicines can prevent asthma attacks. Continue to give them as recommended even when your child is doing well.
  • Carry your child’s rescue medications: Rescue inhalers or nebulizers can give quick relief of symptoms. Have them readily available.
  • Recognize the warning signs of attacks: Know what to do in an emergency, and help your child learn to describe how they are feeling.
  • Inform teachers, friends, and family: Make sure everyone in your child’s circle is aware of your child’s condition and to look for signs.

Asthma Program at Lurie Children's

Our experts provide thorough evaluation and comprehensive testing for asthma, including education on avoiding common triggers and extensive treatment options.

Learn more about our Asthma Program

Related News

Protecting Your Child from Poor Air Quality

Children are particularly vulnerable to poor air quality due to their developing lungs and higher exposure. Our expert explains how to recognize symptoms and protect children, especially those with asthma or immune conditions.

Read more

Lurie Children’s Study to Use Soy Isoflavones in a Precision Medicine Approach to Prevent Wheezing and Asthmatic Inflammation in High Risk Infants

Read more

“Smart” Asthma Inhaler Sensors Improve Pediatric Asthma Control

Read more

Asthma Action Plan Helps Dealveon Breathe Easier

Dealveon had his first asthma attack in pre-school, which was so severe that he lost consciousness and was rushed to the emergency room.

Read more

Study Assesses Asthma Treatment Options in African American Children and Adults

Read more

With Help From His Family, Liam Lives with Asthma

Liam was admitted into the Pediatric Intensive Care Unit (PICU) where he was diagnosed with viral/allergy induced asthma.

Read more