How is allergic rhinitis commonly treated in children?

Allergic rhinitis in children is commonly treated with antihistamines and avoidance of allergens, making this the correct answer. Antihistamines are effective in alleviating symptoms such as sneezing, itching, runny nose, and nasal congestion caused by allergies. They work by blocking the action of histamine, a substance in the body that contributes to allergic symptoms.

Avoidance of allergens is equally crucial in managing allergic rhinitis. Identifying and reducing exposure to triggers, such as pollen, mold, pet dander, or dust mites, can significantly improve a child's symptoms and quality of life. This dual approach of medication and environmental control helps to minimize the frequency and severity of allergic reactions.

Other treatment options like surgical intervention are typically reserved for more severe cases or when there are anatomical issues, such as nasal polyps or significant nasal obstruction, that do not respond to medical management. Increased outdoor exposure does not typically help and may worsen symptoms during peak pollen seasons. Long-term antibiotic use is not applicable, as allergic rhinitis is not caused by bacterial infection, meaning that antibiotics would not address the underlying issue. Therefore, the most effective and commonly recommended treatment strategy solely involves the use of antihistamines in conjunction with measures to avoid allergens.