Rett syndrome is a kind of autism, a severe form of the disorder that affects girl and girls only. With symptoms that include lots of hand movements, and the loss of language and motor skills, it is actually difficult to classify it as one of the maladies that constitute the autism syndrome. Added to the above are seizures as well, and eventual death due to breathing irregularities. Genuinely, not a lot of autistic patients have been known to die that way, though.
Certain mental illnesses affect the development of children, some in more ways than one. Some seem to impair their ability or desire to make friends, some even the ability to communicate. Some start right from birth, and others seem to be developed as the children grow up. Most of them are classified under the autistic spectrum, and those that do not fall in that category get to be treated as outliers.
There is a special combination of symptoms that add up to autism. Individually, any number of children all over the world suffer many of the symptoms, and it is easy to start jumping to such conclusions. When several of these symptoms are combined and severe, then it could be autism, but when they are not, it could be anything else. Advocate to get a comprehensive test so that you get a proper diagnosis.
It is not rare, but at the same time, it is not too common to have a child act with bizarre behavior as though they were suffering from some kind of delusions or something. You may find that this does not seem to impair their intelligence or communication, so it is not likely to be autism. However it can be something close, so you want to find out what that is, and find out what the best medication is for it.
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