My sister is 24 years old, living by herself (with monetary support from my parents) in NYC and working on a masters degree. However, I wonder if she may be autistic. She has ADD, but I feel there is more that has not been discovered.
She has been socially isolated since middle school or so. Since then, at any given time, she will have about 3 friends. She has more friends in college, but they have mostly been roommates that she was placed with. She has never dated or shown interest in a guy, but often talks about getting married and having children.
She will often be looking out of the corner of her eyes or tilting her head as if she's uncomfortable/ unsure of her surroundings. When she walks, she looks at the ground. It also seems she has trouble putting herself in the shoes of others and in conversation it's not uncommon for her to misunderstand the main point. Many times when she is speaking she will repeat portions of sentences 3 or 4 times. In regular activity she constantly makes a grunting type noise (it sounds like she's whispering "huh") . Something that also stands out to me is her obsession with celebrities and TV shows. She really loves Broadways plays and the show Big Brother. She even meets a lot of Broadway actors and people from BB. After meeting these people, she considers them friends and talks about them as such, I think often mistaking their friendliness and appreciation for friendship.
In general, my sister seems to be naive. She will laugh or joke at inappropriate times and acts like a child at times. But she leads a normal life and works part time as a nanny. Sometimes I don't know if she's acting like that because she around family, or if it's just who she is around everyone. Many of her behaviors seem similar to that of those with Aspergers. They could just be quirks though. I really have no background in this, but would really like to get a better idea. My parents notice her behaviors but either ignore them or chalk it up to immaturity. It frustrates me because I want her to have the best life possible, and I feel like knowing this would somehow help.