Rett Syndrome Summary Rett syndrome is a rare genetic disease that causes developmental and nervous system problems, mostly in girls. It’s related to autism spectrum disorder. Babies with Rett syndrome seem to grow and develop normally at first. Between 3 months and 3 years of age, though, they stop developing and even lose some skills. Symptoms include Loss of speech Loss of hand movements such as grasping Compulsive movements such as hand wringing Balance problems Breathing problems Behavior problems Learning problems or intellectual disability Rett syndrome has no cure. You can treat some of the symptoms with medicines, surgery, and physical and speech therapy. Most people with Rett syndrome live into middle age and beyond. They will usually need care throughout their lives. NIH: National Institute of Child Health and Human Development National Institute of Child Health and Human Development Encyclopedia Breath holding spell Clinical Trials ClinicalTrials.gov: Rett Syndrome National Institutes of Health Genetics Genetics Home Reference: Rett syndrome National Library of Medicine What Causes Rett Syndrome? National Institute of Child Health and Human Development Diagnosis and Tests How Do Health Care Providers Diagnose Rett Syndrome? National Institute of Child Health and Human Development Find an Expert National Institute of Child Health and Human Development National Institute of Child Health and Human Development National Institute of Neurological Disorders and Stroke National Institute of Neurological Disorders and Stroke Journal Articles Rett Syndrome Array Rett syndrome Start Here Rett Syndrome Mayo Foundation for Medical Education and Research Rett Syndrome National Institute of Neurological Disorders and Stroke Rett Syndrome National Institute of Neurological Disorders and Stroke Rett Syndrome National Institute of Child Health and Human Development Symptoms What Are the Symptoms of Rett Syndrome? National Institute of Child Health and Human Development Treatments and Therapies What Are the Treatments for Rett Syndrome? National Institute of Child Health and Human Development Specifics What Are the Types and Phases of Rett Syndrome? National Institute of Child Health and Human Development