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Multiple, spontaneous, noninflammatory cutaneous atrophic pits on the extremities

An 16-year-old Korean girl presented with a 3-year history of extrafacial atrophic lesions on her arms, forearms, thighs and legs, which had gradually developed since she was 13 years old, slowly increasing in size and number over time. The patient was otherwise healthy, and had not experienced any preceding trauma or inflammation. There was no familial history of a similar disorder. Physical examination revealed bilateral distribution of a number of lenticular and punctate depressed lesions on the patient’s limbs (Fig. 1). The depressed sites were varioliform, nonscaly lesions, 1–3 mm wide, of normal skin colour with no pigmentary change, and had sharply defined margins. There was no herniation on palpation.