Hypersensitivity is caused by an exaggerated immune response to a harmless substance, which can be triggered by various factors including genetic predisposition, environmental exposures, and the nature of the allergen itself. The immune system mistakenly identifies these substances as threats, leading to an overproduction of antibodies, particularly Immunoglobulin E (IgE). This response results in inflammation and tissue damage, manifesting as allergic reactions or autoimmune diseases. Common triggers include pollen, certain foods, medications, and insect stings.
Inhaled or ingested allergens usually cause immediate hypersensitivity reactions.
Type I hypersensitivity reaction http://en.wikipedia.org/wiki/Asthma
Delayed hypersensitivity reactions, also known as type IV hypersensitivity reactions, are caused by T cells recognizing antigens and triggering an immune response. This can happen hours to days after exposure to the antigen. Common triggers include certain drugs, metals, and infectious agents.
IgE is the immunoglobulin associated with hypersensitivity reactions, such as allergies. When an allergen triggers the production of IgE antibodies, it can lead to a rapid immune response that causes symptoms like hives, itching, and even anaphylaxis.
The accented syllable in "Hypersensitivity" is "-sen-".
Type IV Hyper sensitivity. AKA delayed hypersensitivity. Can be classified into: -contact -tuberculin -granuloma
hypersensitivity to light :) People with migraines have this, as well as phonophopia (hypersensitivity to sound).
hypersensitivity
hypersensitivity
It is also called DTH(delayed type hypersensitivity) is cell mediated instead of antibody
Hypersensitivity is also known as allergic reaction, exaggerated immune response, or allergic sensitivity.
Type II hypersensitivity is also known as cytotoxicity hypersensitivity and it may affect variety of organs and tissues. The antigens are endogenous and exogenous chemicals. Type III Hypersensitivity complex type of hypersensitivity and it may affect individual organs like skin, Liver etc.