Progeria..

Progeria is an extremely rare genetic disorderin which symptoms resembling aspects of aging are manifested at a very early age.Progeria is one of several progeroid syndromes. Those born with progeria typically live to their mid-teens to early twenties. It is a genetic condition that occurs as a new mutation, and is rarely inherited, as carriers usually do not live to reproduce. Although the term progeria applies strictly speaking to all diseases characterized by premature aging symptoms, and is often used as such, it is often applied specifically in reference to Hutchinson–

Gilford progeria syndrome (HGPS).