My diagnosis blurs between lines of high-functioning and Aspergers, but am most likely latter due to speech delays as a child. It can help get insurance things covered or benefits in school, plus closure of mind. 
These days, nobody can tell if I am autistic, but as a child who couldn't even write or speak more than 3 words, I was no different from the other girl with classic autism.
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Shedding your shell can be hard.
Diagnosed Level 1 autism, Tourettes + ADHD + OCD age 9, recovering Borderline personality disorder (age 16)