Open Access

Fragile X Syndrome

Fragile X syndrome (FXS) is a genetic disorder characterized by mild-to-moderate intellectual disability. The average IQ in males is under 55, while about two thirds of females are intellectually disabled. Physical features may include a long and narrow face, large ears, flexible fingers, and large testicles.

A genetic condition causing intellectual disability.

Fragile X syndrome causes mild to severe intellectual disability. It affects both males and females, but females usually have milder symptoms.

Symptoms include delays in talking, anxiety and hyperactive behaviour. Some people have seizures. Physical features might include large ears, a long face, a prominent jaw and forehead and flat feet.

Therapy can be used to treat learning disabilities. Medication may be used to treat anxiety and mood disorders.