What is the first-line treatment for mild allergic rhinitis?

Antihistamines are considered the first-line treatment for mild allergic rhinitis because they effectively block the action of histamine, a chemical released during an allergic reaction that contributes to symptoms such as sneezing, itching, and runny nose. Antihistamines can alleviate these symptoms quickly and provide relief for those experiencing mild allergies.

While intranasal corticosteroids offer effective anti-inflammatory properties and can be very useful for moderate to severe cases of allergic rhinitis, they are typically not the first choice for mild symptoms due to their slower onset of action. Decongestants address nasal congestion but do not address other symptoms such as sneezing and itching as effectively as antihistamines. Saline nasal sprays can help to moisten nasal passages and may provide some symptomatic relief but do not tackle the underlying allergic response in the way that antihistamines do. Therefore, antihistamines are preferred for their quick and targeted action against mild allergic rhinitis symptoms.