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
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
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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
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