4.0 of 1 Ratings
A 16-year-old Caucasian boy presents to your family practice office complaining of itchiness. He denies other symptoms. He also denies tobacco, alcohol, or other illicit drug use and is not sexually active. He has no other significant past medical or surgical history aside from a meniscal repair from a wrestling injury sustained two years ago from which he has recovered fully. Vitals are T 98.3, HR 67, BP 110/70. On exam you note several pruritic, erythematous, slightly raised annular patches with central clearing on his back.Which of the following additional tests or features are sufficient to make the diagnosis of this boy's skin lesion?
Acid-fast bacilli on smear from skin scrapings
History of recent herald patch and lesions along skin cleavage lines
Presence of hyphae when KOH added to skin scrapings
Symmetrical distribution on bilaterial extremities progressing proximally
History of time spent in a Lyme-endemic region
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