Noonan syndrome is a disorder characterized by birth defects such as multiple unusual facial characteristics, short stature, heart defects, bleeding problems, developmental delays, and abnormalities of the bones of the rib cage.
Signs and symptoms include the birth defects described above. Abnormal facial features are prominent signs of Noonan syndrome. Additional associated signs and symptoms of the condition can include
- a broad or webbed neck,
- eye problems including strabismus,
- an unusual chest shape, and
- low- and wide-set nipples.
Males may show undescended testes (cryptorchidism).
Cause of Noonan syndrome
Other noonan syndrome symptoms and signs
- A Broad or Webbed Neck
- Abnormalities of the Bones of the Rib Cage
- Bleeding Problems
- Developmental Delays
- Eye Problems Including Strabismus
- Heart Defects
- Low- and Wide-Set Nipples
- Multiple Unusual Facial Characteristics
- Short Stature
- An Unusual Chest Shape
Main Article on Noonan Syndrome Symptoms and Signs
Pictures, Images, Illustrations & Quizzes
Family Health History: Genetics, DNA Testing and Your Health
WebMD explains why your doctor asks about your relatives' health conditions and how you can get the information if you don’t know.
Genetics: 11 Surprising Things Your Genes Say About You
Explore what role DNA plays in your health, love life, and more in this WebMD slideshow.