The unique Brooke Greenberg

 Brooke Greenberg (1993-2013) is the only one person in the world with Syndrome X which prevents normal aging.At the age of 20 years she appeared one year old .

      Brooke Greenberg was born in Baltimore and died in Baltimore too.She was the first documented case of neotenic complex syndrome.Throughout her life of 20 years,she remained physically and cognitively similar to a toddler despite her increasing age.