How are seasonal allergies different from a cold?
季節性過敏與感冒有何不同？
A common cold has similar symptoms to seasonal allergies. However, a reaction to a cold is caused by a virus while a reaction to an allergen is the result of the immune system responding to a substance it has deemed a threat. Learn more about head, eyes, ears, nose, and throat symptoms.
Five ways to tell your seasonal allergies from a cold:12
Colds can produce a fever; allergies cannot.
Colds typically don’t cause itchy, watery eyes. Allergies typically do.
Cold symptoms aren’t likely to last more than two weeks, but many people with seasonal allergies will experience symptoms for six weeks at a time.
Sore throats can accompany colds but rarely occur with allergies.
Colds can occur during any season, while seasonal allergy symptoms will likely appear at the same time each year.
一般感冒的症狀與季節性過敏症狀相似。然而，感冒反應是由病毒所造成，而過敏原反應則是因免疫系統對視為威脅的物質做出反應之結果。深入瞭解頭部、眼睛、耳朵、鼻子和喉嚨的症狀。  五種方法，讓您分辨是感冒還是季節性過敏：12 感冒可導致發燒；過敏則否。 感冒通常不會造成眼睛發癢、泛淚；過敏通常則會。  感冒症狀通常不會持續兩週以上，但許多患有季節性過敏的人每次經歷症狀可能長達六週。 感冒可能會伴隨喉嚨痛，但過敏則很少發生。  感冒可能會在任何季節發生，而季節性過敏症狀則會在每年同一時間出現。