Which disorder, which falls under the umbrella of autism spectrum disorder, is found almost exclusively in females?

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Rett disorder is a rare disorder that almost exclusively affects girls. It results in severe impairments in physical and mental development, and is classified under the umbrella of autism spectrum disorder. Asperger's disorder, childhood disintegrative disorder, and autistic disorder are all more commonly diagnosed in males.

Which Disorder, Which Falls Under the Umbrella of Autism Spectrum