Autism spectrum disorders (ASD) are a group of developmental conditions that affect how a person communicates, interacts, and behaves. People with ASD may have difficulty understanding social cues, which can make it hard for them to form friendships. They might also have specific interests or engage in repetitive behaviors. ASD is called a "spectrum" because it affects individuals in different ways and to varying degrees. Some people may need significant support in their daily lives, while others may be highly independent. Early diagnosis and intervention can help individuals with ASD develop important skills and improve their quality of life.