Asthma is a chronic inflammatory disease that can cause airways
to tighten, swell and produce excess mucus.
Symptoms include wheezing (a whistling sound when you breathe),
coughing, chest tightness and difficulty breathing, especially at
night and in the early morning.
You may have all or just a few of these symptoms and they may
vary from one episode to the next.
Some people with asthma have extended symptom-free periods, while
others experience symptoms daily.
In addition, some people with asthma only have symptoms during
exercise or when they are exposed to allergens or viral
respiratory tract infections.
It is important to recognize and treat even mild asthma symptoms
to help you prevent severe episodes and keep asthma under
Asthma has no cure, but many treatments are available to minimize
symptoms and help those with asthma lead normal, active lives.