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Symptoms may include red eyes, an itchy rash, sneezing, coughing, a runny nose, shortness of breath, or swelling. [12] Note that food intolerances and food poisoning are separate conditions. [3] [4] Common allergens include pollen and certain foods. [11] Metals and other substances may also cause such problems. [11]
Urushiol-induced contact dermatitis (also called Toxicodendron dermatitis or Rhus dermatitis) is a type of allergic contact dermatitis caused by the oil urushiol found in various plants, most notably sumac family species of the genus Toxicodendron: poison ivy, poison oak, poison sumac, and the Chinese lacquer tree. [1]
While seasonal allergies often begin in the sinuses, you may also experience symptoms in your head (headache and pressure), throat and chest (hoarseness and cough) and yes, even in your stomach ...
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]
[1] [5] [2] [6] The common allergies vary depending on the country. [1] Risk factors include a family history of allergies, vitamin D deficiency, obesity, and high levels of cleanliness. [1] [2] Allergies occur when immunoglobulin E (IgE), part of the body's immune system, binds to food molecules. [1] A protein in the food is usually the ...
Atopic reactions are caused by localized hypersensitivity reactions to an allergen. Atopy appears to show a strong hereditary component . One study concludes that the risk of developing atopic dermatitis (3%) or atopy in general (7%) "increases by a factor of two with each first-degree family member already suffering from atopy". [ 14 ]
Most cases of metal allergy are caused by consumer products containing metal; exposure at work can also cause metal allergies. [3] The largest human exposure to metals is ingestion; while food or drink containing metals can cause an allergic reaction in people who already have an allergy, it's not clear if it can cause a new allergy, as of 2021 ...
Hypoallergenic, meaning "below average" or "slightly" allergenic, is a term meaning that something (usually cosmetics, pets, textiles, food, etc.) causes fewer allergic reactions. The term was first used in 1953 in an advertising campaign for cosmetics [ 1 ] [ better source needed ] or perhaps as early as 1940. [ 2 ]