Abstract
Childhood asthma constitutes a significant healthcare burden due to its chronic nature and prevalence, affecting approximately 5–10 % of the pediatric population. Asthma is often heterogeneous and characterized by chronic airway inflammation. It is classified into two main phenotypes based on airway inflammation: T2-high (eosinophilic) and T2-low (neutrophilic/pauci-granulocytic) phenotype. Allergic sensitization is commonly associated with T2-high asthma, involving T helper 2 and innate immunity cells and type 2-associated cytokines, including interleuikin-4 (IL-4), IL-5, and IL-13. Type 2 inflammation is characterized by eosinophilic infiltrate. Asthma and allergic rhinitis share common mechanisms, and their association, known as united airways disease, highlights the close interconnection between upper and lower airways. Effective allergic rhinitis control positively impacts asthma, emphasizing the importance of early identification and personalized therapeutic strategies. One is allergen immunotherapy, a disease-modifying approach demonstrating preventive and therapeutic efficacy in children. However, more research is needed to optimize pediatric allergic rhinitis management.
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