Developmental effects

Early developmental milestones in children with fragile X syndrome may be achieved later than average, or be mildly delayed. Fragile X syndrome can result in:

• global developmental delay
• intellectual disability
  • affects most males, and 30 to 50% of females
  • ranges from significant learning disability to profound intellectual disability, with most people in the mild to moderate range
• speech, language and communication difficulties
• poor fine and gross motor coordination
• specific learning difficulties.