When asthma symptoms appear and are diagnosed in adults older than age 20, it is typically known as adult-onset ast hma. About half of adults who have asthma also have allergies.Adult-onset asthma.
Adult-onset asthma does not run in families the way childhood asthma does. Instead, many factors have been linked to asthma in adulthood. Certain types of work: Asthma that starts or worsens on the job is one type of adult-onset asthma. 5 Usually, a chemical or allergen used at the job site is responsible for triggering symptoms.
Adult-onset asthma also may be the result of commonplace irritants in the workplace (called occupational asthma) or home environments, and the asthma symptoms come on suddenly. What is asthma? Asthma is a disorder of the lungs that causes intermittent symptoms.
Different illnesses, viruses, or infections can be a factor in adult onset asthma. A bad cold or a bout with the flu is often a factor in adult onset asthma. Smoking does not cause adult onset asthma; however, if you smoke or if you are exposed to cigarette smoke (second-hand smoke), it .