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For example, in 1996 the International Programme on Chemical Safety proposed calling it idiopathic environmental illness, because of their belief that chemical exposure may not the sole cause, [7] while another researcher, whose definition includes people with allergies and acute poisoning, calls it chemical sensitivity. [9]
Hypersensitivity pneumonitis (HP) or extrinsic allergic alveolitis (EAA) is a syndrome caused by the repetitive inhalation of antigens from the environment in susceptible or sensitized people. [1] [2] Common antigens include molds, bacteria, bird droppings, bird feathers, agricultural dusts, bioaerosols and chemicals from paints or plastics. [3]
Oral allergy syndrome (OAS) or pollen-food allergy syndrome (PFAS) is a type of allergy classified by a cluster of allergic reactions in the mouth and throat in response to eating certain (usually fresh) fruits, nuts, and vegetables. It typically develops in adults with hay fever. [1] It is not usually serious. [2]
Mast cell activation syndrome (MCAS) is a term referring to one of two types of mast cell activation disorder (MCAD); the other type is idiopathic MCAD. [1] MCAS is an immunological condition in which mast cells, a type of white blood cell, inappropriately and excessively release chemical mediators, such as histamine, resulting in a range of chronic symptoms, sometimes including anaphylaxis or ...
Type I hypersensitivity occurs as a result of exposure to an antigen. The antigens are proteins with a molecular weight ranging from 10 to 40 kDa. [10] The response to the antigen occurs in two stages: the sensitization and the effect stage. In the "sensitization" stage, the host experiences an asymptomatic contact with the antigen.
Allergic ACS is a syndrome involving two components. One component is immune-mediated resulting in hypersensitivity, allergy, and an anaphylactic or anaphylactoid reaction. The second component involves cardiac signs and symptoms seen with acute coronary syndrome (ACS). Cardiac symptoms vary depending on the type of variant the patient presents ...
The Skeeter syndrome should not be confused with another type of reactivity to mosquito bites, severe mosquito bite allergy (SMBA). SMBA is most often an Epstein-Barr virus-associated lymphoproliferative disease that complicates ~33% of individuals with chronic active Epstein-Barr virus infection or, in extremely rare cases, individuals with Epstein-Barr virus-positive Hodgkin disease or an ...
Allergy testing may reveal the specific allergens to which an individual is sensitive. Skin testing is the most common method of allergy testing. [39] [failed verification] This may include a patch test to determine if a particular substance is causing the rhinitis, or an intradermal, scratch, or other test. Less commonly, the suspected ...