<unk>  is a skin condition of unknown cause, usually appearing on the dorsal hands, presenting as papules with a central keratotic core.:704
Perforating granuloma annulare
Cholesterol granuloma
Steatocystoma multiplex
Actinic granuloma
Perifolliculitis capitis abscedens et suffodiens
Granulosis rubra nasi
Lymphangioma circumscriptum
Acquired perforating dermatosis