I pretty much only communicate verbally. Nonverbal communication is learned young, and the only communication I got for too many years was "fuck off and die", and it wasn't delivered gently. I now have what I call "hint blindness". I think hint blindness is common in the bullied, and all autistic people got bullied.
This is one of those things I can't sort the chicken from the egg as far as how I ended up this way. Autism, ADHD, and cPTSD all walk the same path.