[esens]

> I think ADHD and it's subtypes is probably a description of something like 8 different actual neurological causes, which all show up as 'ADHD'.

This is the case with I believe probably the majority of psychological illnesses that have not yet been nailed to a clear biological cause.

Schizophrenia definitely has a bunch of sub-types. As does anxiety. As does whatever is sociopathy/psychopathy. ADHD included.

Over time, individual types of each of these mental illnesses will be carved out from the general type and tied to specific biological causes, thus making the vague categories even smaller.