It is an allergy
This is the hypersensitivity to a drug or other substance without any relation with thr immunological response.
This is the hypersensitivity to a drug or other substance without any relation with thr immunological response.
Type I hypersensitivity reaction http://en.wikipedia.org/wiki/Asthma
hypersensitivity
Hypersensitivity
Allergens on the skin usually cause delayed hypersensitivity reaction.
Type IV
An allergen is any substance that may cause an allergic reaction. So if an individual has an allergy to penicillin then penicillin is the stimulus for that individuals allergic reaction and PCN is an allergen but only for that individual. So any substance including nuts, pollen and drugs can act as an allergen. The key point is that allergens will only cause an allergic reaction in a person whose body perceives that substance as foreign but not for the general population.
An Arthus reaction is a hypersensitivity reaction involving the in situ formation of antigen/antibody complexes after the intradermal injection of an antigen.
True.
they are all hypersensitivity reaction
Mariana C. Castells has written: 'Anaphylaxis and hypersensitivity reactions' -- subject(s): Hypersensitivity, Anaphylaxis, Acute phase reaction, Clinical immunology, Allergy, Acute-Phase Reaction