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Less common causes include: physical factors, biological agents such as semen, latex, hormonal changes, food additives and colors, and topical medications. [18] Physical factors such as exercise (known as exercise-induced anaphylaxis) or temperature (either hot or cold) may also act as triggers through their direct effects on mast cells.
The treatment of immediate hypersensitivity reactions includes the management of anaphylaxis with intramuscular adrenaline (epinephrine), oxygen, intravenous (IV) antihistamine, support blood pressure with IV fluids, avoid latex gloves and equipment in patients who are allergic, and surgical procedures such as tracheotomy if there is severe ...
Allergic reactions can range from mild to severe. Common allergic diseases include allergic rhinitis, allergic asthma, allergic conjunctivitis and atopic dermatitis. Each condition presents its own set of symptoms. In severe cases, certain allergies can lead to a life-threatening reaction called anaphylaxis.
When the weather starts to cool, a common question often arises: "Am I sick, or is it just allergies?" Here's what the experts say.
[3] An example of complement dependent type II hypersensitivity is an acute hemolytic transfusion reaction following transfusion of ABO incompatible blood. [4] Preformed antibody (predominantly IgM) against donor red cell antigens not found in an individual of a particular blood group (e.g. anti-A IgM in an individual with blood group B), bind to the donor red cell surface and lead to rapid ...
Type III hypersensitivity, in the Gell and Coombs classification of allergic reactions, occurs when there is accumulation of immune complexes (antigen-antibody complexes) that have not been adequately cleared by innate immune cells, giving rise to an inflammatory response and attraction of leukocytes.
Or cold hands that come with other symptoms, such as joint pain, a new rash, weight loss, night sweats (as seen in connective tissue/autoimmune diseases), pallor, weakness, shortness of breath ...
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