[Nursie]

I say I'm pretty sure I've suffered from bouts of depression because I've been through periods of feeling little but emptiness, sleeping nearly all the time and not wanting to interact with the world, completely unrelated to any external events that might reasonably make me feel 'down'.

I don't think it's necessarily helpful to try and exclude or segregate someone's depression as a different phenomenon to your own (they're just a bit down whereas I'm clinically depressed) based on a one-liner in a post on the internet.