Posted by: Pdfprep
Post Date: November 9, 2020
A 45-year-old man has developed an annular rash with a scaly edge on his thigh. The rash has been spreading. He has some general aches and pains.
What is the single most useful investigation?
A . ANA
B . Skin scrap for mycology
C . Skin swab for bacteria
D . Biopsy lesion
E . Lyme antibodies
Answer: E
Explanation:
Explanation Spreading annular rash suggests erythema migrans of lyme disease.
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