[plaguuuuuu]

Most neurological conditions are far less clear cut than physical disabilities. At some point there's a very grey area between what constitutes a 'disorder' and what is deemed to be merely an aspect of one's personality. In the end, some imbalances of neurotransmitters or differences in brain development have DSM criteria and others are written off as individual quirks.

Obviously I respect that you'd like to be referred to matter-of-factly but 'disabled' or whatever is a wider demographic than just the wheelchair-bound.