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Name Possible reaction(s) Remarks Balsam of Peru: Redness, swelling, itching, allergic contact dermatitis reactions, stomatitis (inflammation and soreness of the mouth or tongue), cheilitis (inflammation, rash, or painful erosion of the lips, oropharyngeal mucosa, or angles of their mouth), pruritus, hand eczema, generalized or resistant plantar dermatitis, rhinitis, conjunctivitis, and blisters.
Perennial allergic rhinitis (nonseasonal allergic rhinitis; atopic rhinitis): Caused by allergens present throughout the year (e.g., dander). Allergic rhinitis may be seasonal, perennial, or episodic. [9] Seasonal allergic rhinitis occurs in particular during pollen seasons. It does not usually develop until after 6 years of age.
Rhinitis is very common. Allergic rhinitis is more common in some countries than others; in the United States, about 10–30% of adults are affected annually. [12] Mixed rhinitis (MR) refers to patients with nonallergic rhinitis and allergic rhinitis. MR is a specific rhinitis subtype. It may represent between 50 and 70% of all AR patients.
An allergen is an otherwise harmless substance that triggers an allergic reaction in sensitive individuals by stimulating an immune response.. In technical terms, an allergen is an antigen that is capable of stimulating a type-I hypersensitivity reaction in atopic individuals through immunoglobulin E (IgE) responses. [1]
The prevalence of non-allergic rhinitis phenotypes in the general population: A cross-sectional study. Allergy. 2022; 00: 1– 12.
When airborne peanut protein exposure and reactions of children with known peanut allergies were explored, no allergic symptoms or anaphylaxis were observed when peanut allergic children were not aware of the airborne exposure. Interestingly, when aware of the exposure, symptoms of itchy eyes, sneezing, and runny nose resulted.
Ragweed pollen is a common allergen. A single plant may produce about a billion grains of pollen per season, [11] [12] and the pollen is transported on the wind. It causes about half of all cases of pollen-associated allergic rhinitis in North America, where ragweeds are most abundant and diverse. [8]
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]
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