I never had any problems that validates my DX, but maybe the hypomania, which I only experienced 3 known times in my life before being DXed and medicated, and more I learn I feel I may have been over DXed and do not really require any meds, on the other hand, it may have been thr depressive side of things that the pdoc felt a mood stabilizer was necessary. I had a former T and pdoc, that said it is possible for a "mildly" bipolar person with mild hypomania, to get by unmedicated, even develop ways of having control, but cases like that are rear or rare (not sure what one) professional evaluations when in doubt can help confirm this possiblity.
Heck, this is a hard one, for I feel almost every living thing goes through some cycling, biologically as well as mentally, and it would be unfair and over DXing if judged only by this.
I just think if a person requires a mood stabilizer they should use them, if they are not truly bipolar or so mild, nearly detectable, then let it be.
A person needs to sit down and give lots of thought of what is best for them while also being able to function and get along in the world around them. Very grey area, but great topic, and interesting opinions on this, I find here at this forum.
I've actually been told by my pdoc, that in time I may be able to be totally weaned of my MS, it's a low dose now, but hormonal/emotional stuff of this menopausal stage and care giver to a sickly, mom with dementia may make this not the time yet to come off meds. Oh well, I'll wait, for I do not find any negative things coming out of being on my meds.
We all have to go with what we feel comfortable with, as it helps us.
Take care,
DE

Sorry for my rambling, perhaps I am getting a little hypomanic, it wouldn't be so bad about now.