Question: Can you identify this condition?

A 40-year-old man presents with an advancing, twisting, winding, reddish streak on his left thigh of 7 days’ duration. It is associated with mild itching.

The most likely diagnosis is

1. Cutaneous larva migrans

2. Allergic contact dermatitis

3. Erythema annulare centrifugum

4. Acute lymphangitis

5. Blister beetle dermatitis

Answer on page 491

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