Organ System and ABVP Core Examination Review Module C : Study Questions: Part 2

Allergy:

With regard to the immunologic mechanisms associated with the allergic reaction, which cell type plays the most significant role in allergy?

What role does the Mast cell play questions?

Why to certain allergic diseases (Pollen allergy, food allergy, scabies) have similar clinical patterns? Specifically, why do these diseases affect the ear pinnae, face, feet, and axilla?
          (Hint: Which cell type is predominantly distributed in these regions of the skin?

What changes take place in the epidermis and immune system that allow secondary infections to be so common in patients with allergic dermatitis? Specifically why do most dogs with allergies have secondary bacterial pyoderma or Malassezia dermatitis?

How is otitis caused by allergies?

How do the following drugs work to treat allergies?
          (What is the mechanism of action and the cell that is targeted by each drug?)

Steroids
Antihistamines
Hyposensitization vaccine
Staphage lysate
Cyclosporine