Asthma in Teens and Adults
The cause of asthma isn't known. Health experts believe that inherited, environmental, and Reference immune system Opens New Window factors combine to cause Reference inflammation Opens New Window Reference Opens New Window of the airways. This can lead to asthma and asthma attacks.
Asthma may run in families (be inherited). If this is the case in your family, you may be more likely than other people to get long-lasting (chronic) inflammation in the airways.
Studies show that exposure to allergens such as Reference dust mites Opens New Window, cockroaches, and Reference animal dander Opens New Window may influence asthma's development.Reference 1 Asthma is much more common in people with allergies, although not all those who have allergies get asthma. And not all people with asthma have allergies.
Environmental factors and today's germ-conscious lifestyle may play a role in the development of asthma. Some experts believe that there are more cases of asthma because of pollution and less exposure to certain types of bacteria or infections.Reference 2 As a result, children's immune systems may develop in a way that makes it more likely they will also get allergies and asthma.
Asthma in adults also can be related to work. This is called Reference occupational asthma.
|By:||Reference Healthwise Staff||Last Revised: Reference October 22, 2012|
|Medical Review:||Reference E. Gregory Thompson, MD - Internal Medicine
Reference Rohit K Katial, MD - Allergy and Immunology