CASE HISTORY
The patient,Asuncion,is an eight-year-old girl from Argentina.She received the BCG vaccine for tuberculosis about one year before coming to the United States.Upon entering school in the United States,she must take a skin test for tuberculosis (TB).Asuncion tries to refuse but is told it is a requirement.She allows the nurse to apply the test to her arm.Three days later,the test site has a large red lesion and the skin is starting to slough (peel off).
The reaction Asuncion is experiencing is most similar to someone who has

Question

Quizplus · Accepted Answer

The large red lesion and skin sloughing are indicative of a severe allergic reaction, similar to contact dermatitis caused by exposure to poison ivy. This reaction is likely due to Asuncion's immune system reacting to the tuberculosis antigen in the skin test, which was not present in the BCG vaccine she received in Argentina. The other answer choices do not fit the symptoms described.

CASE HISTORY The Patient,Asuncion,is an Eight-Year-Old Girl from Argentina.She Received the BCG