i think this is an important and beautiful topic, morwenna.
it wasn't so long ago that people felt reluctant to talk about the issue of depression, which increased the toll of this terrible disease. i think it's amazing everyone here shares so positively!
my mother has been bi-polar all her life. she is a very artistic person: writing, watercolors, collages, etc. in the mid-70s she was finally diagnosed and then the treatment options were mostly all bad.
the drugs then were really nearly as debilitating as the disease itself, but she continued teaching in the local school as best she could.
nowadays, the treatments are better, altho' she had to try many different medicines at a wide range of doses to find what worked. that was hard and time-consuming.
treatment for this is very individual. and i agree you need to ensure you get therapy and not just drugs.
with this context, let me say that my mother's intuition and judgement were largely ruined when she was ill or the treatment wasn't working for her yet. she believed she was great, she would say she felt great, that she had great insight -- when she was manic -- but of course objectively she wasn't. the disease was fooling her.
only when after a long, sad time and the medicine and therapy had begun to work for her did her real intuition and judgement return. and so this is my reply to your question morwenna.
sadly sometimes you have to work very hard to make sure the doctors -- if you are female -- pay adequate attention to you. if the medicine makes you feel weird or numb or something and not "better," then please work or get a friend of loved one to work to make sure the doctors change your treatment to help you feel right. this can take months sometimes.
but i think once a person is "better," then they will find their "real" self again and their "real" intuition. at least it has been so with my mother's example.
i hope this helps you.