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Symptom Assessment of Patients with Allergic Rhinitis Using an Allergen Exposure Chamber
Published on: March 3, 2023
Symptomatic treatment of pollen-related allergic rhinoconjunctivitis in children: randomized controlled trial
J B Wartna1, A M Bohnen1, G Elshout1
1Department of General Practice, Erasmus MC, Rotterdam, The Netherlands.
Insights
Daily intranasal corticosteroids (INCS) were not better than on-demand INCS or oral antihistamines for allergic rhinoconjunctivitis (AR) symptom relief in children. On-demand INCS reduced corticosteroid exposure and costs.
Area of Science:
- Pediatric Allergy and Immunology
- Otolaryngology
- Clinical Pharmacology
Background:
- Allergic rhinoconjunctivitis (AR) affects 12% of children.
- Current treatments include intranasal corticosteroids (INCS) and oral antihistamines, but optimal symptom relief remains unclear.
- This study compares daily INCS, on-demand INCS, and on-demand oral antihistamines for pediatric AR.
Purpose of the Study:
- To determine if daily intranasal corticosteroids (INCS) are superior to on-demand INCS or on-demand oral antihistamines in relieving allergic rhinoconjunctivitis (AR) symptoms in children.
- To evaluate the efficacy of different treatment strategies for pollen-induced AR.
Main Methods:
- A single-blinded randomized controlled trial involving 150 children (aged 6-18) with pollen-related AR.
- Participants received daily INCS (fluticasone propionate), on-demand INCS, or on-demand oral antihistamine (levocetirizine) for 3 months.
- Daily online symptom diaries tracked nasal and eye symptoms, with the primary outcome being the percentage of symptom-free days.
Main Results:
- On-demand INCS resulted in 30% symptom-free days, compared to 22% for daily INCS (not statistically significant).
- The on-demand antihistamine group achieved 15% symptom-free days (not statistically significant compared to daily INCS).
- Children using on-demand INCS used 61% less fluticasone than those on daily INCS (P < 0.0001).
Conclusions:
- Daily INCS were not superior to on-demand INCS or on-demand antihistamines for symptom-free days in pediatric AR.
- An on-demand INCS strategy offers reduced corticosteroid exposure and lower costs.
- This suggests on-demand INCS is a viable alternative for managing pediatric allergic rhinoconjunctivitis.
Background:
About 12% of children are affected by allergic rhinoconjunctivitis (AR). Although the main symptomatic treatments are intranasal corticosteroids (INCS) (daily or on demand) and oral antihistamines, it remains unclear which treatment provides the best relief of symptoms. Therefore, this study examines whether daily use of INCS is superior to on-demand use or to oral antihistamines on demand.
Methods:
A single-blinded randomized controlled trial in children (aged 6-18 years) with pollen-related AR. Patients received either INCS daily (fluticasone propionate), INCS on demand (fluticasone propionate) or oral antihistamine on demand (levocetirizine) for 3 months during the grass pollen season. A daily online symptom diary on both nose and eye symptoms was completed. The primary outcome was the percentage of symptom-free days.
Results:
A total of 150 children were randomized. The percentage symptom-free days was in favour of INCS on demand (30%) compared with INCS daily (22%), that is 8% difference (95% CI -5 to +21%; not significant). The antihistamine on-demand group had 15% symptom-free days, that is 7% difference compared to INCS daily (95% CI -6 to +19%;, not significant). Patients in the INCS on-demand group used on average 61% less fluticasone than patients in the INCS daily group during the study period (P < 0.0001).
Conclusions:
This trial with three parallel treatment groups shows that INCS daily was not superior to INCS on demand or to antihistamine on demand regarding the number of symptom-free days. An on-demand INCS strategy has the advantage of a lower overall corticosteroid exposure and less costs.
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