Noonan syndrome

What is Noonan syndrome? Noonan syndrome is a rare genetic condition present from birth, that causes a distinctive appearance and a range of health problems. People with Noonan syndrome may be mildly affected, or more severely affected. How the disorder affects people with Noonan syndrome can change as they get older. Noonan syndrome is caused by a genetic mutation in any one of several different genes. In about half of all cases the condition is inherited, although the parent who passed the condition on to their child may not even know that they carry the faulty gene because they show