Well, like I said, if being functional is being able to get tasks of daily living done, being non-functional would be like decompensating. It'd be different for each person, but we think of functionality as roughly things like taking care of one's health, getting work or schoolwork done, getting the bills paid (or working things out with creditors if the $ isn't there), cleaning house, anything like that, then non-functional would be inability to do those things for one reason or another. It can vary from one day to the next.

It need not be a mental problem, right now the way our back is we have a lot of trouble doing housework and feel non-functional on that, but functioning okay as far as other things like our work (self-employed) or making appointments, getting sethrenn to school in the morning and so on.