芹菜。桦树的花粉可能是过敏源之一,芹菜是加重桦树花粉过敏的一个常见因素,过敏体质的人应少吃。坚果。坚果会加重因花粉导致的过敏反应,处在花粉过敏期的人应少吃坚果为益。泡菜。发酵食物中含有大量组胺,会引起皮肤起疹、发痒,因此过敏体质的人在过敏高发季节尽量 celery. Birch pollen may be one of the allergens, celery is aggravated birch pollen allergy is a common factor, allergic people should eat less. nut. Nuts will aggravate the allergic reaction caused by pollen, people who are allergic to pollen should eat nuts less beneficial. pickle. Fermented foods contain large amounts of histamine, can cause skin rashes, itchy, so people with allergies in the high season of allergy as much as possible