Other causes include organisms such asdust mitesand molds. Chemicals, plants and dead skin particlesfrom dogs and cats can also cause allergic reactions. So can insect stings and some foods.

• 其它的过敏原包括诸如尘螨和霉菌的生物。化学物质、植物以及来自猫狗身上的死皮碎片也可能引起过敏反应。昆虫叮咬和一些食物也是一样。