Study of various phenotypes of bronchial asthma and skin sensitivity to common aeroallergens in allergic asthma patients

Asthma is a disease characterized by airway obstruction, usually reversible which is due to bronchial hyperreactivity which vary over time and intensity. This variation is most of the times due to allergens. Our primary aim was to assess the various phenotypes of asthma and to find the common aeroallergens acting as triggers. This was a cross sectional study that enrolled 85 asthmatic patients from the first clinically phenotyped and then were subjected to skin prick test to find the common aeroallergen. The data obtained indicated that "allergic asthma" phenotype is the most common and the most common aeroallergen found by skin prick test is Dermatophagoides pteronyssius followed by Lepidoglyhus destructor(mites). The second most common aeroallergen found was pollens. Categorizing the bronchial asthma according to its phenotypes is essential to give individuals proper treatment to attain optimal lung function. And also aeroallergens are the most common triggering factor, preventing the exposure from these sensitized aeroallergens with help to reduce persistent symptoms and will decrease the frequencies of exacerbations which needs further detailed study to ascertain the actual impact.