護理師教導病人預防季節性過敏性鼻炎，下列哪項行動最有幫助？
A nurse is teaching a client about preventing seasonal allergic rhinitis. Which action is most helpful?
- AOnly start medication once symptoms are severe僅在症狀嚴重時才開始用藥
- BUse a dry duster to remove dust daily每天使用乾抹布清除灰塵
- CKeep windows open to ensure fresh air circulation保持窗戶開啟以確保空氣流通
- DAvoid going outdoors on high pollen count days✓ 正解在高花粉濃度的日子避免外出
季節性過敏性鼻炎（Seasonal allergic rhinitis）的發生與環境中的過敏原，特別是花粉（pollen）的濃度密切相關。預防此類過敏的關鍵在於「減少接觸過敏原」。當天氣預報顯示花粉指數（pollen count）偏高時，空氣中瀰漫的花粉濃度會顯著增加，此時外出活動最容易引發或加劇過敏症狀。因此，建議病人在這些高風險的日子裡盡量待在室內，關閉門窗，以最大限度地減少花粉的吸入，是最直接有效的預防措施。 在臨床實務中，護理師應教導病人識別並預測花粉高峰期，並採取相應的規避措施。這屬於健康促進（health promotion）與疾病預防（disease prevention）的範疇。優先順序（priority）在於採取預防性的行為，避免症狀發生，而非僅僅在症狀出現後才處理。
Avoiding outdoor activities on days with high pollen counts is the most effective preventive measure because it directly minimizes exposure to the primary allergen triggering symptoms. Prophylactic strategies focusing on reducing contact with pollen are superior to reactive treatments or measures that may inadvertently increase allergen exposure.