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McCune-Albright Syndrome (MAS): Condition Information

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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 http://www.nlm.nih.gov/medlineplus/ency/article/001217.htm [top]

Last Updated Date: 01/30/2014
Last Reviewed Date: 01/14/2014