Allergic reactions are categorised into 4 different types of hypersensitivity reactions, that are broken up into the time it takes the body to react and the way by it reacts.
Each hypersensitivity type has different antigens involved, different hypersensitivities, different reactions and different symptoms, which depending on the individual and exposure, can impact the severity.
Allergy Type I (IgE-mediated) hypersensitivity reactions, are the most common and lead to fast reactions occurring within 24 hours of encountering the allergen.
Generally Allergy types I, II and III are antibody mediated while type IV is cell-mediated.
Type I, II and III reactions are classified as immediate reactions as they occur within 24 hours of allergen exposure. Type IV reactions are classified as delayed reactions as they after over 24 hours of allergen exposure.
Working closely with your health care provider and understanding your Allergy is important in understanding, preventing and informing others on how to manage a situation where your body deals with an immune response from being exposed to an Allergen.
The table below is common reference into the breakdown of the different hypersensitive reactions:
The information provided on Allergy Life Australia is to generally educate and inform you about living with allergies, intolerances and conditions, and is not intended as medical instruction or as a substitute for diagnosis, examination and advice by a qualified health care provider.
HAVE YOU HAD AN EXPERIENCE ACROSS ANY OF THE HYPERSENSITIVITIES? LET US KNOW IN THE COMMENTS BELOW