While many women live with endometriosis, Halsey says she hopes shining a light on her experience will make it easier for others to be diagnosed correctly.

"I know how excruciatingly painful it can be and how discouraging the disease can be," she wrote in a Twitter message. "To feel like it's gonna limit you because of how debilitating it is. To miss school and work, or even worse to GO and suffer through it anyway feeling like a prisoner in your own body."