An Arthus reaction is a hypersensitivity reaction involving the in situ formation of antigen/antibody complexes after the intradermal injection of an antigen.
A transfusion reaction is typically an acute hypersensitivity reaction to foreign red blood cells, which can occur immediately or within a few hours of the transfusion. Subacute hypersensitivity reactions usually take days to develop after exposure to the antigen, unlike the immediate onset of symptoms seen in transfusion reactions.
Dermal hypersensitivity reaction is an exaggerated immune response in the skin to certain substances or allergens. This reaction can lead to symptoms such as redness, itching, swelling, and rash at the site of contact with the allergen. Common causes include contact dermatitis, eczema, or allergic reactions to chemicals, plants, or certain metals.
This is the hypersensitivity to a drug or other substance without any relation with thr immunological response.
Anaphylaxis is the term that describes an exaggerated life-threatening hypersensitivity reaction to a previously encountered antigen. It can lead to symptoms such as difficulty breathing, swelling, and a drop in blood pressure, requiring immediate medical attention.
Immunoglobulin E (IgE)
The immunoglobulin present in trace amounts in serum is Immunoglobulin E (IgE). It plays a crucial role in allergic reactions and responses to parasitic infections. Although it constitutes a small fraction of total serum immunoglobulins, its activity is significant in mediating hypersensitivity reactions. Elevated levels of IgE are often associated with allergies and asthma.
Type I hypersensitivity reaction http://en.wikipedia.org/wiki/Asthma
Elevated IgE (immunoglobulin E) levels typically indicate an allergic response or hypersensitivity reaction. High IgE levels are often associated with conditions such as asthma, allergic rhinitis, food allergies, and certain parasitic infections. In some cases, elevated IgE can also suggest an underlying immunological condition. However, a comprehensive evaluation by a healthcare professional is necessary to determine the specific cause and implications.
hypersensitivity
The main contraindication for the administration of anti-tetanus immunoglobulin (TIG) is a history of severe allergic reaction or anaphylaxis to any component of the immunoglobulin preparation. Additionally, caution is advised in individuals with a history of hypersensitivity to human immunoglobulins. It is important to assess the patient's medical history and any potential allergies before administration.
IgE
Hypersensitivity
Hypersensitivity is also known as allergic reaction, exaggerated immune response, or allergic sensitivity.
Type IV
An Arthus reaction is a hypersensitivity reaction involving the in situ formation of antigen/antibody complexes after the intradermal injection of an antigen.
A transfusion reaction is typically an acute hypersensitivity reaction to foreign red blood cells, which can occur immediately or within a few hours of the transfusion. Subacute hypersensitivity reactions usually take days to develop after exposure to the antigen, unlike the immediate onset of symptoms seen in transfusion reactions.