Miley Cyrus is opening up about a rare medical condition she says contributes to her signature voice and makes performing a serious challenge. In a recent appearance on Apple Music's " The Zane Lowe Show ," the Grammy-winning singer revealed she has Reinke's edema, a condition that causes swelling in the vocal cords and affects vocal performance.

In a recent interview on Apple Music's "The Zane Lowe Show," Cyrus said that Reinke's edema is a part of her "unique anatomy."

Miley Cyrus opened up about the medical condition that gave her a raspy voice — and has prevented her from going on tour