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Author Question: A patient presents with poison ivy on the extremities, face, and buttocks after an initial exposure ... (Read 116 times)

newbem

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on: Jun 25, 2018
A patient presents with poison ivy on the extremities, face, and buttocks after an initial exposure 48 hours ago. This condition is an example of:
 
  a. anaphylaxis.
  b. serum sickness.
  c. delayed hypersensitivity.
  d. viral disease.

Question 2

A 10-year-old male is stung by a bee while playing in the yard. He begins itching and develops pain, swelling, redness, and respiratory difficulties. He is suffering from:
 
  a. immunodeficiency.
  b. autoimmunity.
  c. anaphylaxis.
  d. tissue-specific hypersensitivity.


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SomethingSomething

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Reply #1 on: Jun 25, 2018
Answer to Question 1

ANS: C
The response to poison ivy is a delayed hypersensitivity because it takes up to 72 hours to devel-op. Anaphylaxis is immediate. Serum sickness-type reactions are caused by the formation of im-mune complexes in the blood and their subsequent generalized deposition in target tissues. Poi-son ivy is not a viral disease.

Answer to Question 2

ANS: C
Anaphylaxis occurs within minutes of reexposure to the antigen and can be either systemic (gen-eralized) or cutaneous (localized). Immunodeficiency is a decrease in the immune response. Au-toimmunity is a disturbance in the immunologic tolerance of self-antigens. Tissue-specific reac-tion is an autoimmune reaction.


newbem

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Reply 2 on: Jun 25, 2018
Wow, this really help

chereeb

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Reply 3 on: Yesterday
Excellent

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