Allergic rhinitis region to region; in general, the tiny, hardly visible pollens of wind-pollinated plants are the predominant cause. Pollens of insect-pollinated plants are too large to remain airborne and pose no risk. Examples of plants commonly responsible for hay fever include: Allergic rhinitis may also be caused by allergy to Balsam of Peru, which is in various fragrances and other products. Allergy testing may reveal the specific allergens to which an individual is sensitive. Skin testing is the most common method of allergy testing. This may include a patch test to determine if a particular substance is causing the rhinitis, or
Allergic bronchopulmonary aspergillosis Allergic bronchopulmonary aspergillosis Allergic bronchopulmonary aspergillosis (ABPA) is a condition characterised by an exaggerated response of the immune system (a hypersensitivity response) to the fungus "Aspergillus" (most commonly "Aspergillus fumigatus"). It occurs most often in people with asthma or cystic fibrosis. "Aspergillus" spores are ubiquitous in soil and are commonly found in the sputum of healthy individuals. "A. fumigatus" is responsible for a spectrum of lung diseases known as aspergilloses. ABPA causes airway inflammation, leading to bronchiectasis—a condition marked by abnormal dilation of the airways. Left untreated, the immune system and fungal spores can damage sensitive lung tissues and lead