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Noonan Syndrome

Healthcare Provders

Print a PDF of all Noonan Syndrome Information.

The GEMSS website is intended primarily for educators and families of preschool through elementary 
school age children. While much of the information may also apply to older children, the authors are 
aware that there is a lack of information about transition issues that would be helpful for older 
children and young adults. It is our hope that this information can be added in the futur

Noonan syndrome (NS) includes findings of short stature, heart defects, distinctive facial features, and developmental delays.  Other findings may include differences in clotting ability, chest shape, lymph system, and in the eye, etc. Up to 1/3 of individuals with NS have a mild intellectual disability.

This condition is variable even within a family. This can range from subtle physical findings to more extensive changes.

NS is a genetic disorder which can be inherited or caused by a spontaneous gene mutation. About 1 in every 1,000 to 2,500 babies is born with NS.

Learn more about the physical characteristics and/or symptoms of Noonan syndrome.

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This information was last updated in December, 2015.