Rett's syndrome.
D001259:Ataxia / Q000235:genetics*; D001321:Autistic Disorder / Q000235:genetics*; D003704:Dementia / Q000235:genetics*; D005260:Female; D005787:Gene Frequency; D006801:Humans; D007223:Infant; D008297:Male; D012737:Sex Factors; D013577:Syndrome