<unk>  (also known as a "Hobnail hemangioma") is a cutaneous condition characterized by a central brown or violaceous papule that is surrounded by an ecchymotic halo.
Targetoid hemosiderotic hemangioma
Verrucous perforating collagenoma
Hyperkeratotic cutaneous capillary-venous malformation
Eccrine angiomatous hamartoma
Sinusoidal hemangioma
Tufted angioma
Melanoma with features of a Spitz nevus
Littoral cell angioma