Stages of Rett Syndrome

• Early Onset (between 6 – 18 months)

• Rapid destructive phase – between 1 – 4 years

• Plateau Stage – symptoms get no worse or their intensity lessens

• Late motor deterioration – starts between 5 and 25 years of age and can last for decades

• Pre-Regression Stage- <1 Year

• Developmental Stagnation -
  9-24 months

• Stage of Regression
  1-4 years

• Early Post- Regression Stage-
  Preschool -early school years

• Late Post- Regression stage -
  5-15-25 Years ++