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A pollen count is a measurement of the number of pollen grains in a given volume of air. Pollen counts, and forecasts of pollen conditions, are routinely produced and reported to the public because high aerial pollen concentration is associated with increased rates of allergic reaction for those with conditions such as hay fever and asthma .
Allergic rhinitis is the type of allergy that affects the greatest number of people. [12] In Western countries, between 10 and 30% of people are affected in a given year. [2] [7] It is most common between the ages of twenty and forty. [2] The first accurate description is from the 10th-century physician Abu Bakr al-Razi. [13]
Allergens found at low levels that today do not result in symptoms cannot help predict future symptom development. The quantitative allergy blood result can help determine what a patient is allergic to, help predict and follow the disease development, estimate the risk of a severe reaction, and explain cross-reactivity. [116] [117]
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Due to high protein content, egg white allergy is more common than the reverse. [11] The majority of children with this allergy become tolerant by adulthood. [12] Fish: Respiratory reactions, Anaphylaxis, oral allergy syndrome, sometimes vomiting One of three allergies to seafood, not to be conflated with allergies to crustaceans and mollusks. [13]
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