<unk>  <unk>  is a type of food<unk>  classified by a cluster of<unk> c reactions in the mouth and throat in response to eating certain (usually fresh) fruits, nuts, and vegetables that typically develops in adults with hay fever.<unk>  is not a separate food<unk> , but rather represents cross-reactivity between distant remnants of tree or weed pollen still found in certain fruits and vegetables. Therefore,<unk>  is only seen in people with seasonal pollen<unk> es, and mostly people who are<unk> c to tree pollen. It is usually limited to ingestion of uncooked fruits or vegetables. Another term used for this<unk>  is pollen-food<unk> . In adults up to 60% of all food<unk> c reactions are due to cross-reactions between foods and inhalative<unk> ns.<unk>  is a Type 1 or IgE-mediated hypersensitivity, which is sometimes called a "true<unk> ". The body's immune system produces IgE antibodies against pollen; in<unk> , these antibodies also bind to (or cross-react with) other structurally similar proteins found in botanically related plants.<unk>  can occur any time of the year but is most prevalent during the pollen season. Individuals with<unk>  usually develop symptoms within minutes of eating the food.
Oral allergy syndrome
Burning mouth syndrome
Dermatophagia
Neck-tongue syndrome
Drug-induced angioedema
Hereditary angioedema
Factitious airs
Mucus fishing syndrome