Apologies if this veered too much off topic. I've been kicking this around for a week or two, and felt the need to add recent events and post.
It's 5am, I haven't eaten in 12 hours, had anything substantial to drink in about 8, have been sitting on the toilet for over an hour, and instead of doing something about any of those things I'm editing a comment to fix a typo.
As someone else said upthread (and I've told a lot of people myself) if you're depressed but know you can focus and accomplish things, the first thing you accomplish might be suicide.
This is one of the few places where I agree with standard practice. Depression first, then ADHD.