I may or may not have been depressed a few times. Hard to tell, because the "no energy to get out of bed" criterion can be easily used to excuse simply being a lazy, cowardly moocher. Would I have gotten out of bed if I knew I'd be sentenced to death by starvation unless I did it immediately? Maybe. Would I if someone had started hitting me hard with a club? Most definitely, unless, of course, they rendered me unable to do so by breaking too many of my bones or damaging my nervous system.
Therefore, I don't like describing any mental state I've experienced as depression. I'm familiar with the term, however, because it was used a lot of times as the invalidating label du jour to avoid reasoning with me. Maybe having your character's points be systematically dismissed with this Bulverism would do the trick.
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The red lake has been forgotten. A dust devil stuns you long enough to shroud forever those last shards of wisdom. The breeze rocking this forlorn wasteland whispers in your ears, “Não resta mais que uma sombra”.