Figure 1: The cutaneous manifestation and histopathology of the lichen nitidus in a 26-year-old man after tattooing: (a) numerous tiny papules on upper arms confined to the tattooed areas; (b) the papules faded after 1 month of treatment; (c) histopathology showed a characteristic “ball and claw” appearance (H and E stain, ×100); (d) focal dense lymphohistiocytic infiltrates at dermal papillae were circumscribed by elongated rete ridges and overlying thinned epidermis (H and E stain, ×200).