Stephanie goes to her mother’s house for dinner every Sunday. While there, she p

Question

Stephanie goes to her mother’s house for dinner every Sunday. While there, she plays with her mother’s dachshund, Sissy. Afterwards, Stephanie always complains that her skin itches. Her arms are covered with hives.

1. What category of hypersensitivity reaction did Stephanie experience?

a. I

b. II

c. III

d. IV

2. What type of hypersensitivity reaction is described by these symptoms?

a. allergic

b. anaphylatic

c. Contact dermatitis

d. eczema

3. What test could be performed to determine if Stephanie’s reaction is due to dog dander, mold or plant pollen?

a. Microlymphocytotoxicity test

b. RAST

c. RIST

d. Skin test

Explanation / Answer

Answer:

1. a. (Hypersensitivity Type I)

Reasoning: Since the effect on the skin is seen immedietely (just after playing with the dog), it is an allergy. Allergy comes under Hypersensitivity Type I category.

2. a. Allergic

Reasoning: Since the effect on the skin is seen immedietely (just after playing with the dog), it is an allergy.

3. b & c RAST and RIST

Both tests are used to detect IgE (immunoglobulin E) which is associated with allergic reactions.

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