Rett syndrome is a genetic mutation on the X chromosome that leads to neurodevelopmental disorders, with symptoms becoming apparent 6 to 18 months after birth. Clinical manifestations are, head circumference does not grow, brain development disorders, language and intelligence development regression, hand function weakening or stereotyped movements, etc. Most of them have intellectual disabilities, psychological disorders and even affect the respiratory function. There is no specific treatment for this disease, treatment is based on symptomatic treatment, if malnutrition should be given timely nutritional support, oral medication to improve sleep, with status epilepticus, generally need to take carbamazepine, phenobarbital drug treatment. If you suspect that your child has Rett syndrome, take your child to the hospital in time.