Intranasal Corticosteroids as First‑Line Therapy for Pediatric Allergic Rhinitis

Primary Pharmacologic Therapy

Intranasal corticosteroids are the most effective medication class for treating allergic rhinitis in children, controlling sneezing, itching, rhinorrhea, and nasal congestion. 1, 4, 3
They can be initiated without a prior trial of antihistamines or oral decongestants, especially when nasal congestion is prominent. 1, 2
In children, the lowest effective dose should be used; at recommended doses they are safe with negligible systemic effects. 1, 2
Therapeutic onset occurs within 3–12 hours, with full benefit potentially taking several days. 3, 5

Second‑generation oral antihistamines (e.g., cetirizine, loratadine, desloratadine, fexofenadine, levocetirizine) are acceptable alternatives but are less effective for nasal congestion than intranasal corticosteroids. 1, 6, 3
These oral antihistamines are well tolerated with excellent safety profiles in young children, unlike first‑generation agents that cause sedation and performance impairment. 7, 4, 5
Intranasal antihistamines (azelastine or olopatadine) provide a rapid onset of action within minutes and are more effective than oral antihistamines for nasal congestion, though still less effective than intranasal corticosteroids. 6, 8

Adding an intranasal antihistamine to an intranasal corticosteroid is the most effective combination, yielding superior symptom relief compared with corticosteroid monotherapy. 9, 10, 11
Fixed‑dose combinations of an intranasal corticosteroid plus an intranasal antihistamine produce clinically meaningful improvements in both nasal and ocular symptoms. 10
Adding an oral antihistamine to an intranasal corticosteroid does not provide significant additional benefit and should not be used routinely. 9

For severe nasal congestion, a topical decongestant (oxymetazoline) may be added to the intranasal corticosteroid for a maximum of 3 days to provide immediate relief while the corticosteroid takes effect. 9, 2
Topical decongestants must be limited to ≤3 days to avoid rhinitis medicamentosa (rebound congestion). 1, 7, 2
Oral decongestants (pseudoephedrine) combined with oral antihistamines are more effective than either agent alone, but oral decongestants should be used with caution in children because they can cause insomnia, irritability, and hyperactivity. 1, 7, 3

First‑generation antihistamines should be avoided due to sedation, performance impairment, and anticholinergic effects. 1, 6
Over‑the‑counter cough‑and‑cold combinations containing antihistamines and decongestants are ineffective in children and have been linked to serious adverse events; they should not be used. 7, 4, 5
When used at recommended doses, intranasal corticosteroids do not cause clinically significant systemic side effects, hypothalamic‑pituitary‑adrenal axis suppression, or growth suppression in children. 1, 5
Local side effects are minimal (nasal irritation, epistaxis); patients should be instructed to direct sprays away from the nasal septum. 1, 2
The nasal septum should be examined periodically to ensure no mucosal erosions are present. 1, 2