Right so this film is recent and modern (2010 and up). I know for sure it is not American actress or actors, I believe it is French in nature. Film revolves around a young woman that is stuck in her apartment because she has a skin disease/condition that causes her to deteriorate from the inside out. Her body starts to rot basically.. and I remember towards the end of film the apartment is a massive bloody mess and she is in the bath tub and there’s just gore everywhere. Sick I know, but I can’t remember the name for anything.. I vaguely remember the letters “Metam—” or something like that as the title, I think it was a one word title. Please help!