It depends on the use.
Autism as an identity is capitalized - for example Autistic person, Autistic child, Autistic community.Autism as a diagnosis or things for autism are not - for example autism diagnosis, autism classroom.
It is not necessary to do so.
If it is the starting word of a sentence then yes .If not then no.
The parents of autistic children really have their work cut out for them.
No, unless it is the start of a sentence, then you would capitilize the word "sea". Also, if there was a sea otter named "Sea Otter" then you would capitilize the name.
no
No.
It's jaywalker, and no.
No
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yes
No.
Yes, when referring to autism as an identity you capitalize - for example Autistic person, Autistic child, Autistic community. In general you don't capitalize autism, for example when talking about autism as a condition or autistic resources.