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Published on: June 4, 2017
Severity-Dependent Association Between Allergic Rhinitis and Adenoid Hypertrophy in Dust Mite-Sensitized Children
Bo Zhao1, Yang Wang2, Hongyang Zhang2
1Center of Stomatology, The Second Qilu Hospital of Shandong University, Jinan, Shandong, People's Republic of China.
Insights
Allergic rhinitis severity is linked to more severe adenoid hypertrophy in children sensitized to dust mites. Controlling allergic rhinitis early is crucial to prevent worsening adenoid enlargement.
Area of Science:
- Pediatric Allergy and Immunology
- Otolaryngology
- Respiratory Medicine
Background:
- Allergic rhinitis (AR) and adenoid hypertrophy (AH) frequently co-occur in children.
- The precise relationship between AR severity and the degree of adenoid enlargement needs further clarification.
Purpose of the Study:
- To investigate the association between allergic rhinitis severity, allergic inflammatory burden, and the extent of adenoid hypertrophy in children sensitized to dust mites.
Main Methods:
- Cross-sectional study of 170 dust mite-sensitized children with AR.
- Adenoid hypertrophy assessed via nasal endoscopy (Grade III vs. IV).
- AR severity evaluated using TNSS, VAS, PRQLQ-S; inflammatory markers included peripheral eosinophils, total IgE, and specific IgE to Dermatophagoides species.
Main Results:
- Grade IV AH correlated with significantly higher TNSS, VAS scores, and nasal symptom burden (P < 0.001).
- TNSS, VAS, and PRQLQ-S showed moderate positive correlations with choanal obstruction percentage (P < 0.001).
- Eosinophil counts, total IgE, and dust mite-specific IgE levels weakly but significantly correlated with adenoid obstruction.
Conclusions:
- AR severity demonstrates a positive, dose-dependent association with AH in dust mite-sensitized children.
- Adenoid enlargement is linked to clinical and immunological markers of allergic inflammation.
- Early and effective allergic rhinitis control is important for preventing progressive adenoid hypertrophy.
Background:
Allergic rhinitis (AR) and adenoid hypertrophy (AH) frequently coexist in children, yet the relationship between allergic disease severity and the extent of adenoid enlargement remains incompletely defined. This study aimed to investigate the association between AR severity, allergic inflammatory burden, and the degree of AH in dust mite-sensitized children.
Methods:
We conducted a cross-sectional analysis of 170 children with dust mite-sensitized AR from Northern China. AH was assessed by nasal endoscopy and classified as grade III or IV. AR severity was evaluated using the Total Nasal Symptom Score (TNSS), visual analogue scale (VAS), and Pediatric Rhinoconjunctivitis Quality of Life Questionnaire (PRQLQ-S). Allergic inflammatory markers included peripheral blood eosinophil counts (EOS), total IgE, and Dermatophagoides pteronyssinus (d1) and Dermatophagoides farinae (d2)-specific IgE. Group comparisons and Spearman correlation analyses were performed.
Results:
Children with grade IV AH exhibited significantly higher TNSS, VAS scores, and nasal symptom burden compared with those with grade III hypertrophy (all P < 0.001). Nasal obstruction, rhinorrhea, and nasal itching scores were also significantly increased. TNSS (r = 0.426), VAS (r = 0.458), and PRQLQ-S (r = 0.348) showed moderate positive correlations with the percentage of choanal obstruction (all P < 0.001). In addition, eosinophil counts, total IgE, and dust mite-specific IgE levels demonstrated weaker but significant correlations with adenoid obstruction.
Conclusion:
AR severity is positively and dose-dependently associated with AH in dust mite-sensitized children. These findings suggest that adenoid enlargement is associated with clinical and immunological markers of allergic inflammation and highlight the importance of early and effective control of allergic rhinitis to prevent progressive AH.
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