For a disorder as common as fragile X syndrome, the most common hereditary form of cognitive impairment, the facial features are relatively ill.
Most males and about half of females with fragile X syndrome have characteristic physical features that become more apparent with age.
Facial features of fragile X syndrome. As illustrated by the photographs of four children with FXS, the facies associated with this syndrome are subtle. They can .
Fragile X syndrome is characterized by moderate intellectual disability in affected males Distinctive physical features are sometimes present in affected males.
Fragile X syndrome (FXS) is a genetic disorder. Symptoms often include 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.