Asthma Attacks in Adults
Asthma attacks affect mainly adults. It is normal for up to 1 of 6 -7 (15%) of all onset asthma in adults due to various substances in the work environment. Asthma is the most common occupational respiratory disease in industrialized countries. Which exposure may cause asthma?
Allergic occupational asthma is usually caused by exposure to large the molecular substances, usually proteins. Typical examples are asthma among bakers because of sensitization to flour, and among farmers and people working in very expensive to be allergic to animal fur. It is covered in more than 300 different substances that can provoke allergic occupational asthma. An overview can be found for example www.asmanet.com. Smokers and people with atopic disposition are the most prone to allergic occupational asthma.
Non-allergic asthma is usually exposure to small substances. Several types of plastic components can cause asthma, and most notably different isocyanates that are component of polyuretanplastic. Foam is a type polyuretan plastic, other type used for paints and coatings with special requirements for protection (cars, ships, offshore installations).
A second important set of products is cleaning products. These are used as a spray and have a strong mucosal irritant effect by inhalation. Welders who get asthma respond to mucosal irritation welding fumes through a non-allergic mechanism.
A subgroup of non-allergic asthma are called row (Reactive Airways Dysfunction Syndrome). These are conditions caused by accident characterized exposure to mucosal irritants such as chlorine, nitrogen dioxide, acids and alkalis, such as leaks or fumes caused by fire.


