A comprehensive overview of Autism Spectrum Disorder (ASD), detailing its nature as a lifelong neurodevelopmental disability characterized by unique social communication patterns and repetitive behaviors. Explaining current diagnostic frameworks, such as the DSM-5-TR and ICD-11, which utilize a three-tiered system to categorize the levels of support an individual may require. Various contributors discuss the importance of early intervention, the diverse ways symptoms manifest across genders, and the frequent presence of co-occurring conditions like ADHD or anxiety. Information from the CDC and advocacy groups highlights the shift from viewing autism as a disorder to recognizing it as a form of neurodiversity with distinct strengths. Furthermore, the documents offer practical guidance on screening tools, medical evaluations, and the legal processe ...