Annular Ambiguities

September 22, 2015
Jonathan A. Schneider, DO
Jonathan A. Schneider, DO

Test your visual diagnostic skills, vote for your preferred Dx and treatment, and learn about 2 common annular lesions along the way.

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Annular lesions appear as circular or ovoid macules or patches with an erythematous periphery and central clearing. A wide variety of cutaneous and systemic disorders present with the ring-like lesions, which makes careful assessment of characteristics and clinical features essential for narrowing the differential diagnosis.

Chances are you’ve been up against annular ambiguities in your daily practice before. Test your visual diagnostic skills in the pages that follow with a side-by-side comparison.

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The correct diagnosis is: A.   Tinea corporis B.   Lyme disease C.   Nummular eczema D.   Granuloma annulare E.   Erythema annulare       centrifigumThe correct diagnosis is: A.   Tinea incognito B.   Lyme disease C.   Nummular eczema D.   Granuloma annulare E.   Erythema annulare       centrifigum
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The correct initial treatment for granuloma annulare is: A.   More potent topical steroids B.   Reassurance C.   Consultation to dermatology D.   Dapsone E.   PUVA therapyThe correct initial treatment for tinea incognito is: A.   More potent topical steroids B.   Oral griseofulvin C.   Oral fluconazole D.   Topical clotrimazole E.   Consultation to dermatology
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