<unk>  is a common but rarely diagnosed disorder of the hair follicles that clinically gives the impression of blackheads, but the follicles are filled with funnel-shaped, horny plugs that are bundles of vellus hairs.
Trichostasis spinulosa
Tinea imbricata
Kraurosis vulvae
Genu recurvatum
Genital wart
Mania errabunda
Dens evaginatus
Xanthelasma