Have you ever heard of Celine Dion Disease? No, it’s not a medical condition affecting the famous singer, but rather a term that’s been floating around, causing confusion. Celine Dion Disease is not a recognized medical condition. Instead, it’s a term coined colloquially to describe the phenomenon where someone’s voice resembles that of the iconic singer, Celine Dion. It’s often used humorously or to praise someone’s vocal abilities.