What Exactly Is Asthma?

In the United States, more than 28 million people have asthma. Nearly 5 million of them are children under the age of 18. 

Why are children so vulnerable? Asthma is a disease of the lungs that causes airways to swell and narrow. Since children have smaller airways than adults, it’s even harder for air to pass through them during an asthma attack. As a result, asthma is especially serious for children.

When children are exposed to certain triggers, they can quickly develop a cough and trouble breathing. Triggers can include anything they can breathe in. Pollen floating in the air and cigarette smoke are two examples. Respiratory colds and infections can trigger asthma attacks, too. Symptoms can make it difficult — sometimes impossible — to play sports, focus at school or even sleep.

Are Adult and Child Asthma the Same?

Asthma is the same in adults and children. Due to their developing lungs and smaller airways, children can face more severe challenges with the disease. In fact, childhood asthma is a leading cause of emergency room visits, hospitalizations and missed school days. Parents often have to leave work to care for their child.

As a chronic disease, childhood asthma can't be cured, but it can be managed. For many, asthma symptoms often continue into adulthood. 

How Do I Know What Asthma Triggers to Avoid?

Children with asthma may experience wheezing, coughing, tightness in the chest, and trouble breathing. Many things can bring on an asthma attack, including:

• Weather - cold air, changes in climate
• Exercise - high-intensity movement
• Infections - flu, common cold
• Allergens - mold, pollen, dust, dander from animals
• Irritants - cigarette smoke, air pollution
• Emotions – strong crying or laughing

How Is Asthma Treated?

With the right treatment, you and your child can keep symptoms under control and prevent damage to growing lungs.

Asthma is generally treated with two medicines:

• Daily meds for long-term control (‘controller’ medicines) to prevent symptoms
• Quick-relief meds to help with asthma attacks and flare-ups 

When your child has asthma, the condition is always there — even when things are going fine. Symptoms can flare up at any time. Medicine might not work as well as it once did in preventing an asthma attack. Your child may need to use a quick-relief medicine every day to stop asthma attacks. If this happens, talk with your child’s doctor. It could be a sign that your child’s asthma is getting worse. A change in medication may be needed to keep symptoms under control.

Take other steps to help fend off asthma attacks. Avoiding asthma triggers. Monitor symptoms. Create and follow an Asthma Action Plan.  Most kids with asthma can do all the fun things they want to do. Your child will feel better — and have more fun — when their asthma is controlled.&

Sources: Asthma Facts, Figures and Stats,  Asthma and Allergy Foundation of America, 2026; Childhood Asthma, American Academy of Allergy, Asthma & Immunology, 2026; Asthma in Children, MedlinePlus 2025; Back to School with Healthy Lungs,  American Lung Association, 2026; Create an Asthma Action Plan, American Lung Association, 2026