What role do antihistamines play in treating allergic rhinitis?

Antihistamines are primarily utilized for relieving symptoms associated with allergic rhinitis, such as sneezing, itching, runny nose, and watery eyes. They work by blocking the action of histamine, a chemical released during an allergic reaction that contributes to these symptoms. By preventing histamine from binding to its receptors, antihistamines effectively reduce the immediate discomfort caused by allergens, making them a first-line treatment for allergic rhinitis.

In this context, while reducing inflammation may seem like a potential effect, antihistamines do not primarily target the inflammatory processes involved in allergic responses. Similarly, they are not designed for long-term treatment management, as their efficacy is centered around symptom relief rather than altering the underlying allergic condition. Lastly, their use in managing severe asthma is limited, as asthma management typically involves other classes of medications, such as corticosteroids and bronchodilators, rather than solely relying on antihistamines.