My Depressions

We often hear the pairing "Anxiety and Depression". Why do they go together so well?

I was reading the posts here and thought, "You know, I rarely get depressed". In fact, the last time I remember being depressed was two, maybe three years ago when I was inpatient. They definitely let me know I was depressed! Somehow, I couldn't see it.

Then, I thought about anti-anxiety meds and how I've been posting about my pdoc not prescribing them- or if they work well, or if they're addictive.

Then it dawned on me: What if my frequent anxiety spells ARE my depressions! Just depression turned inward?

Yes, in the past, I've had spells of crying "for no reason", catatonia, feeling despondent, and generally just not feeling engaged in life. But, far more frequently, I've had this inside-out depression.

Thoughts?