I think you mean "severe" not "sever"

. But yes, I do. I have Proteus Syndrome. It is a genetic nerveus system disorder. It can deform your body and it progresses meaning that someone could be born with little or no deformities and become completely disfigured by adulthood. But I am luckly, mine is more mild and I have had several surgeries to fix my deformities. Heres a link if you would like to learn more

:
http://emedicine.medscape.com/article/948174-overview