Skip Navigation

McCune-Albright Syndrome (MAS): Condition Information

Skip sharing on social media links

What is MAS?

MAS is a genetic disorder that affects the skin, bones, and the production of certain hormones. Because of its effects on hormones, MAS often causes early puberty in girls. There are also other distinctive symptoms, such as light-brown birthmarks and unusual formations of the bones.1

  1. National Library of Medicine. (2010). McCune-Albright syndrome. Retrieved May 10, 2012, from [top]

BOND National Institues of Health Home Home Division of Intramural Population Health Research