Childhood Asthma:Causes

Overview

Children with asthma, the lungs and airways become easily inflamed when exposed to certain triggers, such as inhaling airborne pollen or catching a cold or another respiratory infection. asthma can cause bothersome daily symptoms that interfere with play, sports, school and sleep. In some children, unmanaged asthma can cause dangerous asthma attacks.

Childhood asthma isn't a different disease from asthma in adults, but children do face unique challenges. Asthma in children is a leading cause of emergency department visits, hospitalizations and missed school days. Unfortunately, childhood asthma can't be cured, and symptoms may continue into adulthood. But with the right treatment, you and your child can keep symptoms under control and prevent damage to growing lungs.

Causes

Asthma is caused by swelling (inflammation) in the airways. During an asthma attack, the muscles surrounding the airways tighten. The lining of the air passages swells. Less air is able to pass through as a result.

Asthma is often seen in children. It is a leading cause of missed school days and hospital visits for children. An allergic reaction is a key part of asthma in children. Asthma and allergies often occur together.

In children who have sensitive airways, asthma symptoms can be triggered by breathing in substances called allergens or triggers.

Common asthma triggers include:

　　Animals (hair or dander)

　　Dust, mold, and pollen

　　Aspirin and other medicines

　　Changes in weather (most often cold weather)

　　Chemicals in the air or in food

　　Tobacco smoke

　　Exercise

　　Strong emotions

　　Viral infections, such as the common cold