Asthma is a condition where the medium and small air passages in the lung go into spasms and block air flow. Inflammation and swelling of the airways cause them to become narrower, make more mucus, and further slow air flow. When a child has asthma, the airways can react to triggers. Some of these triggers are smoke, air pollution, exercise, strong emotions, illnesses such as colds, or pollen. During an acute asthma attack, these factors cause wheezing, coughing, trouble breathing, and chest tightness. Nighttime cough is also common with poorly controlled asthma.
Asthma attacks can be severe. During an attack, quick-acting medicines are used to open the airways. Your child may also take other medicine daily. This is to help reduce inflammation and prevent attacks.
Children with asthma often have allergies. A substance that causes an allergic reaction is called an allergen. Allergens may trigger an asthma attack or make an attack worse. This may occur right after contact, or a few hours later. For this reason, a child with asthma may be referred to an allergist to find out if they have allergies.