Question: Can you identify this condition?

A 25-year-old African-Canadian man presented with persistent, scarlike, hairless lesions on the nape of his neck that had been present for the past 3 years. Initially, the lesions were pruritic, round bumps that developed into small scars. These scars have always been isolated to the nape of the neck. No lymphadenopathy was observed and he had no history of acne or trauma to the area.

The most likely diagnosis is

1. Impetigo

2. Acne vulgaris

3. Tinea capitis

4. Acne keloidalis nuchae

5. Hidradenitis suppurativa

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