Rett syndrome is a rare genetic disorder that affects the way the brain develops. It occurs almost exclusively in girls.
Most babies with Rett syndrome seem to develop normally at first, but symptoms surface after 6 months of age. Over time, children with Rett syndrome have increasing problems with movement, coordination and communication that may affect their ability to use their hands, communicate and walk.
Although there's no cure for Rett syndrome, potential treatments are being studied. Current Rett syndrome treatment focuses on improving movement and communication and providing care and support for affected children and their families.