Lichen nitidus https://en.wikipedia.org/wiki/Lichen_nitidus
Lichen nitidus ose fa'ama'i mumu e le iloa le mafua'aga o lo'o fa'aalia i le 1-2 mm, tu'ufa'atasi ma toniga, iila, pa'epa'e le pito i luga, pa'upa'u sesega aano po'o enaena mumu. O le fa'ama'i e masani ona a'afia ai tamaiti ma talavou matutua. E masani lava, lichen nitidus e leai ni fa'aaliga, o le mea lea, e leai se togafitiga e mana'omia.

Fa'amatalaga atili ― Samoan
References Lichen Nitidus 31869173 
NIH
Lichen nitidus e masani ona aliali mai i tamaiti ma talavou matutua, e a'afia ai itupa uma ma ituaiga uma e tutusa. E aliali mai e pei o ni patupatu laiti, iila, mafolafola i luga o le paʻu, e masani lava 1 i le 2 mm lautele. O nei patupatu e masani ona aliali i luga o lima, vae, manava, fatafata, poʻo le penis. E masani lava e leai ni fa'aaliga, o lea la o le togafitiga e masani lava mo fa'ailoga fa'aleaga po'o fa'alavelave fa'aleagaina.
Lichen nitidus most commonly presents in children and young adults and does not favor one sex or race. Lichen nitidus presents as multiple, discrete, shiny, flat-topped, pale to skin-colored papules, 1 to 2 mm in diameter. These lesions commonly present on the limbs, abdomen, chest, and penile shaft. It is usually asymptomatic, so treatment is generally for symptomatic or cosmetically disturbing lesions.