What type of disorder is Rett Syndrome classified as?

Rett Syndrome is classified as a developmental disorder, which is correct because it primarily affects the development of the brain, particularly in areas that control movement and coordination. This condition is often identified in early childhood and is characterized by normal early growth followed by a loss of developmental milestones, including speech and motor skills. The disorder predominantly affects females and is typically caused by mutations in the MECP2 gene.

Developmental disorders, such as Rett Syndrome, involve a range of complex conditions that influence physical, social, emotional, and cognitive development. In contrast, the other categories mentioned do not encompass the primary characteristics of Rett Syndrome. For example, while it may involve some behavioral aspects, it is not primarily classified that way. Similarly, it is not primarily about sensory processing or a direct physical impairment; rather, it has profound impacts on development and functioning, shaping a child’s ability to interact with their environment and develop skills.