Asthma is a chronic breathing disorder and is the most common chronic health problem among children.
Children with asthma have attacks of coughing, wheezing, and shortness of breath, which may be very serious.
These symptoms are caused by spasms of the air passages in the lungs.
The air passages swell, become inflamed, and fill with mucus, making breathing difficult. Many asthma attacks occur when children get respiratory infections, including infections caused by common cold viruses. Attacks can also be caused by:
* Exposure to cigarette smoke,