Rett syndrome cannot be detected during pregnancy.
Rett syndrome is a mental developmental disorder caused by a mutation in the X gene, which usually shows symptoms 6 to 18 months after birth and cannot be detected during pregnancy.
Symptoms of Rett syndrome usually begin between 6 and 18 months of age and are characterized by brain developmental disorders, slow development of head circumference, regression of speech, motor disorders, and in severe cases, respiratory disorders, mental retardation, and a tendency toward autism.
Clinical diagnosis can be made by molecular diagnostic techniques and electroencephalograms in patients with mental retardation and cerebral developmental disorders, and these diagnostic tests are performed on patients with symptoms that appear after birth.
If your baby develops symptoms of Rett’s syndrome after birth, you should consult a doctor for prompt diagnosis and treatment.