Progeria (), also called Hutchinson–Gilford progeria syndrome and HGPS progeria syndrome is a very rare genetic disorder. Children born with progeria show symptoms which are like aging. This can include skin wrinkles and grey hair or baldness. Progeria is one of several progeroid syndromes. The word "progeria" comes from the Greek words "pro" (πρό), meaning "before" or "premature", and "gēras" (γῆρας), meaning "old age".