Allergy - Food Flashcards
A food allergy is n abnormal immunologic reaction to a food that results in the development of symptoms on exposure to a specific food. Is a food allergy and intolerance the same thing?
- no
Food intolerance involves a difficulty in digesting certain foods or ingredients which causes symptoms such as bloating, diarrhoea, headache
At what age are food allergies most commonly diagnosed?
1 - <1 year
2 - <2 years
3 - <5 years
4 - <10 years
2 - <2 years
What is the incidence of food allergies in the developed world?
1 - 3-6%
2 - 10-20%
3 - 25-50%
4 - >75%
1 - 3-6%
Accounts for 2 children to die each year in the UK
Are all foods allergies IgE related?
- No
Can be:
- IgE related
- non-IgE related
- mix of IgE and non IgE related
Food allergies can be can be
- IgE related
- non-IgE related
- mix of IgE and non IgE related
Of these which is the most difficult to diagnose?
- non-IgE related
Food allergies can be can be
- IgE related
- non-IgE related
- mix of IgE and non IgE related
Of these which has the most rapid onset and is associated with anaphylaxis?
- IgE related
Symptoms occur seconds to minutes
In non-IgE related, symptoms may not occur for hours
In IgE related food allergies, which 2 of the following cells are typically involved?
1 - B cells
2 - mast cells
3 - basophils
4 - cytotoxic T cells
2 - mast cells
3 - basophils
In non-IgE related food allergies, which 2 of the following cells are typically involved?
1 - B cells
2 - eosinophils
3 - basophils
4 - T cells
2 - eosinophils
4 - T cells
In children with food allergies, which of the following are they most likley to also develop?
1 - urticaria
2 - atopic dermatitis
3 - acne vulgaris
4 - rosacea
2 - atopic dermatitis
Essentially all are linked with atopy
In IgE related food allergies all of the following occur in the skin, but which is most common?
1 - urticaria
2 - angioedema
3 - uncomfortable skin
4 - all equally common
2 - angioedema
Essentially this is swelling of specific body parts
In IgE related food allergies, all of the following occur in the respirator ytract, EXCEPT which one?
1 - irritation
2 - pneumonia
3 - swelling
4 - inspiratory wheeze
2 - pneumonia
In IgE related food allergies, all of the following occur in the gastrointestinal tract, EXCEPT which one?
1 - bloody diarrhoea
2 - abdominal pain
3 - abdominal cramping
4 - nausea/vomiting
1 - bloody diarrhoea
In IgE related food allergies, anaphylaxis can occur, including all of the following, EXCEPT which one?
1 - vascular collapse
2 - hypertension
3 - cardiac dysrhythmias
4 - death
2 - hypertension
- hypotension occurs
In non-IgE related food allergies, which of the following DO NOT typically occur?
1 - diarrhoea
2 - vomiting an nausea
3 - abdominal pain
4 - jaundice
5 - faltering growth
6 - blood in stools
4 - jaundice
What is the most important clinical management of food allergies?
1 - epi-pens
2 - antihistamines
3 - IgE specific antibody test
4 - avoid food triggers/education
4 - avoid food triggers/education
Radioallergosorbent test (RAST) is a test on blood for specific antigens