<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 which are bundles of vellus hairs.:768
Trichostasis spinulosa
Genital wart
Naevus Lipomatosus superficialis
Dens evaginatus
Xanthelasma
Blepharophimosis
Hydroa vacciniforme
Lichen striatus