Asthma is a chronic disease that affects your airways. Your airways are tubes that carry air in and out of your lungs. If you have asthma, the inside walls of your airways become sore and swollen. That makes them very sensitive, and they may react strongly to things that you are allergic to or find irritating. When your airways react, they get narrower and your lungs get less air. This can cause wheezing, coughing, chest tightness and trouble breathing, especially early in the morning or at night.
When your asthma symptoms become worse than usual, it's called an asthma attack. In a severe asthma attack, the airways can close so much that your vital organs do not get enough oxygen. People can die from severe asthma attacks.
Asthma is treated with two kinds of medicines: quick-relief medicines to stop asthma symptoms and long-term control medicines to prevent symptoms.
National Heart, Lung, and Blood Institute
All medicines have benefits and risks. The risks of medicines are the chances that something unwanted or unexpected could happen to you when you use them, such as Asthma. Side effects can be temporary or long-lasting, and vary in seriousness. It is important to monitor drugs for Asthma and any other side effects. Sometimes Asthma can be reduced with the right treatment.