So I tried for a few years to enter onto WM but couldn't (I did get triggered by this too) and recently managed to get on this site. I am currently writing after a 20 min session of daydreaming. (I had a 4 hour one before that when I was interrupted by a loose tile that I stepped on while pacing.)
So I have been daydreaming since I was a child of 2 or 3. In the earlier years, it wasn't much of an issue as people around me took care of me. Later, in my primary school years, I started having trouble trying to relate with my peers and half the time I couldn't understand the topics they discussed and they were all very novel. This increased in severity by the third grade and I would even forget myself in public and get lost at marketplaces. I had to take a gap of 3 years from schooling because I couldn't keep up. I would be spaced out for at minimum 15 hours per day. My worlds did increase in size when I was introduced to novels and anime and it just made it harder to not dream (but it did help with making friends and actually making sure I had a normal conversation). OK, at this point I spaced out twice and forgot what I was gonna say. Btw, some daydreams are just blankness or fogginess so I don't always have a world made up. Some other symptoms I have experienced are facial expressions, pacing, humming, body movements (often bumping into things and hurting myself; I fell down the stairs once), muscle twitches (this made me worry whether I got ADHD too and all self diagnostic tests said I should go get myself diagnosed at the therapist ;-; Also shivers.), screaming, repetitive motions, unawareness, and being so intensely immersed that I feel the character's emotions and physical pain irl that you'll catch me crying with actual tears or actually laughing out. I feel embarrassed easily so till now I have only been caught twice doing any motions which were played off for dancing. Music would trigger me too so I have sworn off music. Unfortunately, even removing media from my life has not helped so I'm stuck. I would love to hear your replies :) I feel bad that there are many others who go through the same things as me and I wish this didn't happen to us.