Adult Autism? How? Please Help!

Had my psychology appointment last week. Just when I thought it was safe to get back into the writing…a wrench was tossed. A new study was launched. New doors were opened. New answers to old problems and just maybe a few more initials to add to the seemingly ever growing list of issues. Most recent Autism Spectrum Disorder.
I was always on a pursuit to see if all the underlying issues were somehow magically connected. No sooner did I give that up and blog about acceptance of the Bipolar did this arise. Was she just waiting in disguise for my surprise acceptance to issue the next challenge? Perhaps! So I was tasked to research, as she knows I will anyway, to make the connect. Here are some recent but astonishing findings.
I have historically been diagnosed with Marfans Syndrome, which is a connective tissue disease. I also deal constantly with IBS and acid reflux. I also have severe anxiety issues that present all across the anxiety spectrum from somatic issues to panic attacks and everything in between. Still not enough, add Bipolar 1 and PTSD from a host of abnormal life twists and events. So what is the connection? Maybe Autism.
I know, right? But…how could this have been missed? Isn’t autistic behavior seen at a young age? In fact, I am quite certain that you have to be diagnosed before age 2 or 3 for most, not 50!
Come to find out, with still so much research to do, that “syndromic” Autism can be found much later in life. With 50% of the cases being what I will call “classic” Autism, that is to say, Autism as I read it in the DSM 5, there is another 10% with genetic factors. These genetic factors or the syndromic Autism is my new field of study. Obviously not much out there, and seemingly even less consensus. Much like the C-PTSD, which is not in the DSM but still readily spoken about by professionals on blogs and posts.
Now what? If it is true, I have a long awaited answer that connects ALL of the small mysterious dots. If not, I continue to explore and just be abnormal with one less label.
Interesting fact, at least to me, is that so much of my research kept ending up on Autism Spectrum sites. I study Anxiety and end up there. I study IBS and end up there. The kicker was searching for more info on Marfans syndrome and yet again end up there. Thanks to an article, that I need to find again, which showed the results of a study for Ehlers-Danlos syndrome and it’s connection with autistic symptomatology. Ehlers-Danlos is a connective tissue disorder similar but different than to Marfans syndrome. Similar in the connective tissue disease but different in presentation. All of that said, I have a few questions.

1) Is the genetic presentation of autistic symptoms still considered to be on the Autism spectrum or as a symptom pattern of the underlying genetic disease?

2) Is high functioning Autism a reality or just spoken of like C-PTSD?

3) What is the treatment plan for such a mixture of madness?

4) Is social awkwardness and language deficiency a must or merely part of a whole that may or may not be present?

5) Is it better to ask five questions when four was sufficient?