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Symptoms of indoor allergies can occur year-round but tend to be more troublesome during the winter months when children are inside more often. [18] However, outdoor allergies, or seasonal allergies, normally change with the season. [19] The potential symptoms of a food allergy include: [10] [5] Tingling/itching in the mouth
One of three allergies to seafood, not to be conflated with allergies to crustaceans and mollusks. [13] People with fish allergies have a 50% likelihood of being cross reactive with another fish species, [14] but some individuals are only allergic to one species, such as; tilapia [15] salmon, [13] or cod.
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]
Food allergies were less common than previous research has found, affecting about 4% of the kids in the study, about half the amount seen in studies where people self-report their allergies.
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This is an increase: Reported food allergies among children increased 18 percent from 1997 to 2007, per the CDC. It’s not clear why Americans have so many allergies, but there are some theories.
The peak prevalence of hay fever is highest in children and young adults and the incidence of asthma is highest in children under 10. [63] Ethnicity may play a role in some allergies; however, racial factors have been difficult to separate from environmental influences and changes due to migration. [61]
If both parents have had allergies in the past, there is a 66% chance for the individual to experience seasonal allergies, and the risk lowers to 60% if just one parent has had allergies. [20] The immune system also has strong influence on seasonal allergies, because it reacts differently to diverse allergens like pollen.