Hello.
I've registered on the forums because I have a question. I've spent many hours googling (mostly motivated by curiosity), and asked in a few different forums but never got a satisfying answer.

It is not a big problem for me, I ask mostly because I am curious about what psychology has to say about that.
I don't know if it matters but I am diagnoed with OCD that I manage via therapy and self-management.

Okay but what is "that" ?

Well when I was a young child I used to play in a strange way. I used to shake my hands rapidly but not too fast in front of my chest and imagine things - superheroes fighting, war scenes I've seen on TV, scenes from cartoons I watched...they were always VERY alive to me, and it instantly REPLACED what I saw or heard at the time, like a superior version of daydreaming. It never worked without the element of slightly shaking my hands. When anything that required my attention happened I was instantly brought back to normal, kinda like when reading a book or just daydreaming regulary. I know it sounds very strange but to me it was normal. It was an instant gateway to a fantasy world to me. Any world I wanted to see.

The most important thing IT STILL IS. I am now 20, and I could not get rid of this. Of course I hide it because I know it is not normal. I do it in the privacy of my room most of the time.
I fought many times to stop it because I was afraid I am crazy and that someone might see and ask what I'm doing but it was too strong of a habit to me.

I have noticed when we were both kids that my cousin, who is 3 years younger also does the exact same thing as me. I don't know if he has OCD too or not we are not that close.

Can anyone tell me what medicine has to say about that ? Does anyone else do this ? Is it because of the OCD ?
I am an anxious person, and I'm kind of afraid I will get attacked for posting this. I really hope this is the right forum to post such a question. On another forum I've got answers stating that I am "bent" etc. which was not very pleasing to me.