What Is Smith-Magenis Syndrome? Smith-Magenis syndrome (SMS) is a developmental disorder that affects several parts of the body. About 1 in every 25,000 people around the world have it. But experts ...
Rare, genetic syndrome causes children to lash out at themselves and others. Nov. 16, 2010— -- Beverly Frey of New Tripoli, Pa., suspected something was wrong with her son, Craig, at a very early ...