How many levels of Autism Spectrum Disorder are currently diagnosed?

The correct answer is three levels of Autism Spectrum Disorder (ASD). The diagnostic criteria established in the DSM-5 (Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition) outline that ASD is categorized into three distinct levels based on the severity of symptoms and the support required by the individual.

Level 1 indicates that a person requires support; they may have difficulties with social interactions and communication, but they are generally able to function with some assistance. Level 2 specifies that individuals need substantial support. They may still struggle significantly with social situations and may exhibit more pronounced behavioral issues. Level 3 is characterized by very severe symptoms, with individuals needing very substantial support, as their communication abilities are significantly limited and their behavior may be highly atypical.

This three-tiered system allows for a nuanced understanding of the individual differences in presentation and needs among those on the autism spectrum, guiding support and intervention strategies effectively.