What is fragile X syndrome?

Fragile X syndrome is a genetic condition that can cause a range of learning and developmental problems. These can include:

• intellectual disability
• hyperactivity or attention deficit disorder (ADD)
• anxiety
• autism spectrum disorder
• seizures
• hypotonia

Some children with fragile X may also have mildly characteristic features such as prominent ears.

Fragile X is more common in boys than girls, and boys with fragile X usually have more severe symptoms.

Care for fragile X syndrome

At the Boston Children’s Hospital Fragile X Program, we provide specialty care for children and adults with fragile X. We’re also actively involved in doing research to learn more about the condition and to find better treatments.

Make an appointment

• Call us at 617-355-4697
• International: +1-617-355-5209
• Request an appointment online