People with Autism Spectrum Disorder (ASD) are diagnosed with having either ASD Level 1, Level 2, or Level 3, depending on their symptom severity how much support is needed in daily life. The levels range from least to most severe, with ASD Level 1 describing an individual who has the least severe level of ASD symptoms, and ASD Level 3 describing someone with symptoms on the more severe end of the spectrum.
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