Barbara Palvin is opening up about a debilitating health battle. On Sunday, Dylan Sprouse's wife took to Instagram to inform followers of a troubling health issue she's been dealing with behind closed doors: endometriosis. Alongside a selfie in a hospital bed, the 31-year-old wrote: "Hi guys, it's been a while! Just a little update and a few thoughts for those out there who could relate to what I'm about to share - for some years now I've been dealing with the difficulties that can come with my periods. Fatigue, severe pain, heavy and irregular flow , sleepless nights on the bathroom floor .