Immunology Flashcards
1
Q
What causes urticaria
A
Mast cell activation in the epidermis
2
Q
What causes angioedema?
A
Mast cell activation in the dermis
3
Q
What causes anaphylaxis?
A
Systemic mast cell activation
4
Q
Types of Hypersensitivity Reaction
A
I - < 30 mins including allergies
II - < Antibody mediated 5-12hrs
III - Immune complex mediated 3 to 8 hrs
IV - cell mediated 24-48jrs
5
Q
Ix for contact dermatitis
A
skin patch test
6
Q
When can you d/c someone who was admitted with anaphylaxis
A
6-12 hours following resolution of symptoms
7
Q
Investigations of food allergy
A
skin prick testing
