The document provides an introduction to autism, covering what autism is, the autism spectrum, common impairments associated with autism, challenges autistic individuals face in communication and social interaction, prevalence statistics, and strategies for supporting autistic individuals. Key points include: autism is a lifelong developmental disability affecting social communication and relationships; all autistic individuals experience difficulties with social interaction, communication, and imagination ("triad of impairments") but to varying degrees; autism is considered a spectrum condition with a wide range of manifestations; and understanding autism from the perspective of autistic individuals is important for providing appropriate support.