A pink papule that grew from 1 mm to 10 mm in a week

A 28-year-old healthy white woman with no significant past medical history presents with an enlarging papule on her right lateral neck. She describes a 1- to 2-mm pink papule that grew to approximately 10 mm within the past week. With minimal rubbing or trauma, the papule intermittently bleeds. It is otherwise nontender and nonpruritic. She has no history of skin ...