Practicals 5 - Allergy Lecture Flashcards
food allergy can occur in what % of under 1 year olds
10%
food allergy can occur in what % of under 5 year olds
4-8%
IgE mediated food allergy is a ….
immune mediated quick response (within 1 hour of ingestion of food)
IgE medicated food allergy can occur
in childhood and adulthood
what are the signs of IgE mediated food allergy
Hives
swelling
breathing difficulty
vomiting
floppy / pale
IgE mediated response is associated with
anaphylaxis
what are common allergy foods
peanut, tree nuts, milk, egg, wheat, soy, fish, seafood, sesame
what food allergies are rising in New Zealand
kiwifruit and coconut
what is needed for diagnosis of IgE mediated response
clinical symptoms and positive SPT or serum IgE antibody tests
what is the skin prick test
a way to test for an allergy
- drop of food in liquid form on a scratch, practitioner will measure the size of the weal of the reaction
where will a prick test be performed on a baby
their back
non IgE mediated allergy usually occur when
within the first year of life and usually resolve in early childhood
non IgE mediated allergy, involves the immune system but is
a delayed reaction (2hrs - 48hrs)
non IgE mediated food allergy usually involves
usually involves the gastrointestinal system, such as blood / mucus in stools, reflux, diarrhoea/constipation, excessive crying/abdominal pain
what is needed for non IgE mediated food allergy
clinical symptoms and a negative SPT/serum IgE testing
what is said when introducing allergen foods
from 6 months and before 12 months of age, introduce all allergen foods into the infants diet, and offer regularly once introduced
what was found about the avoidance of peanuts in infants
increased risk of peanut allergy
food intolerance is more common in
older children and adults
food intolerance is a
delayed reaction after ingestion of a large amount of the food
most common food intolerances
lactose and fructose intolerance, other FODMAP foods
food intolerances cause
abdominal pain, diarrhoea/constipation, bloating and gas
food intolerances can be related to
to reduction in digestive enzymes e.g lactase
