Allergy

Question 1

Allergy can be IgE mediated food latex /house dust mite/ pollens

Answer 1

IgE can be immediate reaction of non IgE mediated

Reactions can be immediate 
Delayed 
Urticaria 
Angie Emma 
Allergic rhinitis 
Atopic dermatitis some due to allergy 
Asthma 2-27% allergy food 
Vomiting 
IgE fast 5-30mins profuse vomiting till the allergen gone  (DD acute abdomen) 
Delayed 2hours after food non IgE mediated

Question 2

Common food assoc with IgE mediated reactions

Answer 2

Cows milk. First 3 make up 90% currently

Eggs
Peanuts
Others fish/ soybeans wheat

Question 3

Diagnosis of allergy

Answer 3

1 history is very important 
2 SPT (RAST)
False -ve 
1too young infants 
2 GIT reactions primary 
3 on antihistamines 
4 non IgE mediated problem

Question 4

Natural history of food allergens

Answer 4

Cows milk and egg allergies 90% gone by 5 years
Cooking reduces the allergenic nature of the food
Peanuts and shellfish and fish NOT LIKELY to grow out of
20% improve rest go on in adult hood

Question 5

Prevention strategies for food allergies in high risk infants

Answer 5

1 pregnancy avoid smoking
2 infants BP 4-6months
No evidence of low allergy formulas
No evidence for delaying the intro of allergies foods in fact may INCrease the risk
No evidence for avoiding foods in no allergies in the mother
Potential problems for allergy avoidance
Malnutrition
High cost
Social isolation
Anxiety