Clinical manifestation

Non-inflamed, single or multiple, sharply defined, flesh-colored, light brown, gray, blue, or black, flat papules with a velvety or finely verrucous surface; edges raised off skin surface, giving lesion a "stuck-on" appearance

Dermatosis papulosa nigra variant: small, pedunculated, heavily pigmented papule, with minimal keratotic element, on face Stucco keratosis variant: superficial, gray-to-light-brown, flat, keratotic papules on the dorsa of the feet, ankles, hands, and forearms

Melanoacanthoma variant: deeply pig-mented keratotic plaque with histologic evidence of proliferation or activation of dendritic melanocytes

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