The lives of our favorite celebrities might seem absolutely perfect in every way, but what's totally shocking is a handful of them are dealing with some pretty serious illnesses and disabilities. From having organ transplants to suffering from incurable skin diseases, the stars who have these conditions will make your jaw drop.

Click through the gallery to see what illnesses celebs like Miley Cyrus, Niall Horan and Bella Thorne have, then let us know which ones you had no idea about in the comments below!