Progeria (also known as "Hutchinson-Gilford progeria syndrome" and "Hutchinson-Gilford syndrome") is an extremely rare, severe, genetic condition wherein symptoms resembling aspects of aging are manifested at an early age. The disease has a very low incidence and occurs in one per eight million live births.Those born with progeria typically live about thirteen years, although many have been known to live into their late teens and early twenties and rare individuals may even reach their forties. It is a genetic condition that occurs as a new mutation and is not usually inherited, although there is a uniquely inheritable form. This is in contrast to another rare but similar premature aging syndrome, dyskeratosis congenita (DKC), which is inheritable and will often be expressed multiple times in a family line.