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Flashcards in Session 2 Deck (16):
1

Key allergy words and definitions LO

Allergen, sensitivity, hyposensitivity, sensitisation, anaphylaxis 

Food allergy: 

Allergen - substance -> production of IgE

hyposensitivity -> abnormal response 

sensitisation -> production of IgE antibodies 

allergy-> IgE mediated (peanut) non IgE mediated (milk)

atopy -> genetic inclination to produce IgE to allergens 

anaphylaxis -> allergic response, rapid, death 

A immunologically mediated adverse reaction to foods

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2

How does hay fever  present, conjunctivitis, asthma, eczema, urticaria, hives, angiooedema 

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3

1. Allergic march 

2. Why is allergy important 

Not LO 

change in incidence of allergies with change in age

e.g. Asthma and food dec with age

conjunctivitis increases with age 

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4

What is food allergy? 

food allergy -> adverse affect on health by a specific immune response on exposure to food (IgE or Non-IgE mediated)

food intolerance -> numberous adverse effects to food not due to the immune response 

5

How do we classify food allergies? 

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6

How does food allergy present?

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7

The presenting symptoms of IgE and non-IgE mediated classically affect the systems listed above with stereotypical symptoms. These are:
1. IgE mediated food allergic symptoms:

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8

Non-IgE food allergy symptoms 

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9

The presenting symptoms of IgE and non-IgE mediated classically affect the systems listed above with stereotypical symptoms. These are:
1. IgE mediated food allergic symptoms:

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10

2. Non-IgE mediated or delayed-onset (common food triggers) 

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11

What do we mean by cross reactivity of food allergens 

Food family of the allergen needs to be checked 

40% likely to be allergic to the family of food associated with the allergen 

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12

• Allergy history taking LO 

What should you ask?

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13

• Relevant allergy investigations LO 

physical - height & weight 

screening tests -> IgE sensitisation -> SPTs (skin prick test - prick with IgE) -> 15 mins

prick prick (food to skin)

Diagnosis verification -> ORAL FOOD CHALLENGE 

14

• Food allergy management?

 

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15

Define food intolerance and food allergy 

Differentiate between IgE mediated and Non - IgE mediated 

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16

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