What is the role and common considerations of intranasal corticosteroids in allergic rhinitis?

• A. Intranasal corticosteroids reduce mucosal inflammation with minimal systemic exposure; generally safe but may cause nasal irritation, funny taste, or epistaxis with long-term use.
• B. Intranasal corticosteroids cause systemic side effects.
• C. They are used only for acute relief.
• D. They have no effect on nasal mucosa.

Answer: (A)

Intranasal corticosteroids target allergic rhinitis by dampening the inflammation of the nasal mucosa. They act locally in the nasal passages, reducing inflammatory mediators, edema, mucus production, and recruitment of inflammatory cells, which translates into relief of congestion, itching, sneezing, and drainage. Because most of the drug stays in the nose, systemic exposure is minimal when used as directed, which gives them a favorable safety profile for long-term use.

Common considerations include the potential for local side effects rather than systemic ones. Patients may notice nasal irritation, a taste disturbance, or nosebleeds, especially with frequent use or improper spray technique. They are not typically for immediate, rapid relief; it can take days to weeks to achieve full symptom control, so they are best used chronically and consistently.

Practical points to optimize use: prime the spray if indicated, aim away from the septum to reduce bleeding, and use the lowest effective dose. If irritation or bleeding occurs, separate the spray from the nasal septum and consider saline preps or adjusting the dosing schedule.