At one time autism was not known, until Leo Kanner described it. Just because the DSM has not caught up with the research that does not make it less real. I disagree that there are no criteria. Unfortunately there is no test like for strep throat and we have to rely on the reporting of parents and teachers.
One difficult question is "Where is the cut off point. We all have sensory peculiarities, but when does it become a disorder?"
As far back as I can remember, a lot of these on the checklist were me as a child. My son also has them. I am still learning about it all and he’s only
Usually when proprioceptive dysfunction is explained the symptoms described are those of proprioceptive undersensitivity: bashing into things, crashing,