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By Mayo Clinic staffRett syndrome is a severe, genetic disorder that affects the way the brain develops. Occurring almost exclusively in girls, Rett syndrome produces symptoms similar to those of autism.
Most babies with Rett syndrome develop normally at first, but their progress often slows by the time they reach 18 months of age. Over time, children with Rett syndrome have increasing problems with motor function that may affect their ability to use their hands, speak, walk, chew and even breathe.
No cure exists for Rett syndrome. Treatment focuses on improving movement and communication and providing care and support for affected children and their families.