My sisters are definitely understanding and supportive (I should hope so - one is a psych nurse!) My parents, not so much. My mom seemed surprised that I had to go back on meds, like I should have gotten over things by now. Pretty sure my dad is undiagnosed BP II but he's from the generation where you stuff your feelings.

I have a couple of friends who are supportive, even if I drive them nuts. That helps a lot.