Asthma has been increasing in prevalence and morbidity, however it is unclear if the increase continues. Asthma has long been regarded as a single disease entity, but is now recognised as a heterogenic disease with different ...

The prevalence of rhinitis and asthma has increased considerably over the past century. The cause of this increase remains unknown. Furthermore, rhinitis and asthma are now considered heterogeneous syndromes encompassing ...

Background: Allergic diseases such as asthma, rhinitis and eczema have increased significantly since the middle of the past century and are now common conditions among both children and adults. The increase was observed ...