If someone has MH problems and does not seek help it is NOTHING like a person with a broken leg unless they choose to do nothing about it!
I grew up with a parent with untreated MH issues and sporadic, frequent and lifelong depressive bouts.
I am glad that there are plenty of people who despite suffering depression are able to be kind, loving and not let it affect those around them. Or if they can't help it, they are able to have loving and fulfilled lives despite it.
That was certainly not my experience. As a child I constantly walked on eggshells never knowing when the dark moods would descend and even childhood laughter or giggling would be enough to blacken the mood in the house.
This parent would be rude and scream at and scare everyone, not want to talk, slept alot or stayed in a darkened room. No friends were allowed.
Then one day it would be over and the parent would go about as if nothing had happened, leaving us young children to try and make sense of it all.
I cannot tell you what a devastating and negative impact it has on a young child to try and deal with a parent's horrendous moodswings with no one to explain anything.
As a child you tend to internalise the anguish and believe it is all your fault the parent is like that. And in my case it it was "normal".
I am glad there is a lot more discussion and help for people with depression nowadays as I would never ever wish my worst enemy to live with a person with untreated MH and depression who doesn't believe they need any help with it as it can and will ruin your life and everyone's around them.
I was 50 before I could unburden myself of the guilt of not being able to 'help' this parent. This parent still does not acknowledge there is anything wrong and has never talked about it and aged 80+ never will.