服用抗组胺剂。 使用减充血剂。 使用含药鼻喷剂。 考虑使用鼻用皮质类固醇。 使用盐水鼻喷剂。

I'm interested in that, but I only have a few mins. Can you give me at most the first 500 characters of a detailed explanation in English about that?
Over-the-counter antihistamines are very helpful with minimizing the sinus problems associated with allergen exposure, or allergic rhinitis.  Antihistamines work by blocking the reaction caused by exposure to an allergen. The reaction causes the release of histamine, and antihistamines help to minimize the body’s response to exposure to an allergen or irritant. Antihistamines are most useful in people that have known allergies. Some are seasonal, and some are year-round risks. Seasonal allergic