PissMinge - Your friend seems to have confused the autistic spectrum with the concept of neuro-diversity. Because only autistic people are on the autism spectrum (the clue is kind of in the name), ADD and OCD are two completely separate things. In order to be part of the autistic spectrum a person would have to meet the criteria of the triad of impairments. How then would OCD (which doesn't come anywhere near to fulfilling that criteria) be part of the autistic spectrum? Both conditions often co-exist with autism but are most definitely not part of the autism spectrum. Yet people with such conditions might all be referred to as being neuro-diverse.
As for PDD, I'm not quite sure what you or she means there. PDD means Pervasive Development Disorder. And autism, Aspergers and PDD-NOS were all considered to fall under that category. So I'm not really sure what you're saying. Unless of course you mean PDD-NOS, in which case you'd still be wrong - whilst confusingly enough being right at the same time. Because PDD-NOS was always counted as part of the autistic spectrum, and now like Aspergers it's been folded into the diagnosis ASD.
My point is, your question is meaningless. There is no point in asking how an autistic person like myself might feel about being "lumped in" with others who present different, that's the whole point of the autistic spectrum. No two autistic people are alike, just like NTs I suppose.
And whilst I'm ranting about such things I might as well add "high functioning autism" never did and does not exist as a diagnosis in any diagnostic manual anywhere. I'm so sick of people using that phrase and the misunderstandings it causes. Using the term ASD was supposed to help move away from such things, to stop using terms such as high and low functioning which are offensive as they are overly simplistic. To people who keep using those terms do you have any idea how frustrating it is for people to have preconceived notions about what you can and can't do simply because they believe you to be "high functioning?" And of course in their minds high functioning equates to "highly intelligent, mildly autistic, and not really that bad." When in reality all the phrase really means is you have a normal or above average IQ, it says nothing about how severely a person is affected or disabled by their autism.
Also do people realise how redundant (not to mention annoying ) it is to write/type "ASD spectrum?" Are you aware you're saying "Autism Spectrum Disorder Spectrum?" God that bugs me, and yes I know I'm being pedantic but it really riles me up. Along with people who type "my child is ASD." Language matters, how you refer to people matters, they're not just words.