Allergy is one of the most important predictors of asthma development and control. This is especially true of chronic allergies to dust mites, mold, cockroaches, and animal dander. Since the upper and lower airways have common tissues and similar physiological pathways, it has been shown that what happens in one part affects the other. For example, when the nose is exposed to an allergen, and becomes inflamed, this inflammatory process spreads into the lungs and either worsens a patient’s asthma control or could lay the foundation for later asthma development in those at risk, such as young children.
As the lungs remain chronically inflamed by constant allergen exposure, the tissues of the lungs will first become hyper-sensitive and then eventually undergo permanent structural changes that worsen asthma symptoms over time. The longer this condition is untreated, the more severe, and less treatable it becomes. This is why it is important to catch asthma as early as possible and begin treatment. By treating your allergies, your asthma may become more manageable.