I haven't said much about this b/c we really haven't had any issues concerning this; however, brooke was dx w/ retts syndrome at age 5. Retts is under the umbrellla of autism. It's only found in girls. Brooke does not show much of the outer characteristics of this sydrome. We have recently been concerned w/somethings concerning her w/this disorder and have started asking more questions, even though we see a specialist every 6 months in birmingham. there is much to be said about retts but instead if you are interested i'll just give you the website where there is alot of information. Brooke is in stage 3.