You have dermatitis triggered by a particular material in your socks.  Your feet are covered with a really itchy rash, which has developed blisters over the last day or so.  You had first worn them 2 to 3 days ago, and you did not launder them after buying them at the store.  Finding some antihistamine medication in your bathroom cabinet, you decide to take it to relieve the itching rash.  Which statement is true?

A. The antihistamine will make the rash worse because it reacts with chemicals release by the lymphocytes in your skin, exacerbating the situation.
B. The rash will go away because the antihistamine neutralizes the histamine chemicals coming from mast cells in your skin.
C. The anti-histamine will have no effect because once a type I hypersensitivity kicks in, it will last for a few days.
D. The anti-histamine will have no effect on the rash because histamine is not the chemical mediator in this hypersensitivity.


Answer: D

Biology & Microbiology

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