Lichen nitidus is composed of multiple, discrete,
smooth, and flat, round papules. Individual papules
are 1–2 mm in size, flesh-colored to slightly pink or,
in blacks, hypopigmented, with a glistening appearance
Sometimes, minimal scale is present or
can be elicited by rubbing the surface of the papules.
Occasionally, the papules are grouped and the isomorphic
or Koebner phenomenon is observed. Lesions
may occur anywhere over the skin surface; however,
the most frequent sites of predilection are the flexural
surfaces of the arms and the wrists, lower abdomen,
breasts, the glans and shaft of the penis, and other
areas of the genital region. Infrequently lichen nitidus
is a generalized eruption.