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This occurs because of similarities in the proteins of the pollen and the food. [24] There are many cross-reacting substances. Hay fever is not a true fever, meaning it does not cause a core body temperature in the fever over 37.5–38.3 °C (99.5–100.9 °F). [citation needed]
It typically develops in adults with hay fever. [1] It is not usually serious. [2] OAS is the result of cross-reactivity between antigens of tree or weed pollen and antigens found in certain fruits and vegetables. Therefore, OAS is only seen in people with seasonal pollen allergies, and mostly people who are allergic to tree pollen. [3]
In the developed world, about 20% of people are affected by allergic rhinitis, [15] food allergy affects 10% of adults and 8% of children, [16] and about 20% have or have had atopic dermatitis at some point in time. [17] Depending on the country, about 1–18% of people have asthma. [18] [19] Anaphylaxis occurs in between 0.05–2% of people. [20]
Grass pollen will start around this time, compounding hay fever (pollen allergy) symptoms. Weeds don't start until the late summer and early fall, making back to school season potentially even ...
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When the weather starts to cool, a common question often arises: "Am I sick, or is it just allergies?" Here's what the experts say.
Rhinorrhea can also occur when individuals with allergies to certain substances, such as pollen, dust, latex, soy, shellfish, or animal dander, are exposed to these allergens. In people with sensitized immune systems, the inhalation of one of these substances triggers the production of the antibody immunoglobulin E (IgE), which binds to mast ...
Also, tree pollen season tends to end around May. Allergies are the result of immune system reactions to allergens. When a person encounters something they are allergic to, different chemicals ...