Glomus tumors are rare benign neoplasms composed of glomus cells, blood vessels, and smooth muscle cells. They are classified according to the dominant cell type into 3 types: glomangioma (60%), solid glomus tumors (25%), and glomangiomyoma (15%). The tumors also exist in 2 forms: solitary and multiple. The most common site for these tumors is on the distal extremities. Multiple glomus tumors can be inherited in an autosomal-dominant pattern with incomplete penetrance. Disseminated cutaneous glomus tumors of the glomangioma type originate from smooth muscle cells or pericytes. 

Cutaneous glomangiomas are most commonly found on extremities and subungual regions but can rarely be found in the genital region of males and females.