My hygiene has always tanked hardcore during depression-heavy mixed episodes. Like I'm talking not showering for two weeks, rarely brushing my teeth and wearing dirty, stinky clothes for weeks on end without doing any laundry. My living space will also usually become a disgusting disaster area, trash and dirty dishes everywhere.

Best way I can describe it, is that my mind gets so chaotic, loud and horrific that I get sucked into my own mind, and it becomes increasingly difficult to connect with the 'outside' world. I quit even noticing my hygiene, it quits registering on my awareness, to the point that I can smell awful and not even notice. At most, I might occasionally have a moment where I realize just how gross I am, feel humiliated and ashamed for 10 seconds and then get sucked right back into my hellhole of a brain.