Im concerned my mother is bipolar, due 2 her unreasonable crazy behavior weve not spoken for 8 months, i don't know who she is anymore, what 2 do?

Be there: Send her a letter or email, or leave her a voice mail letting her know that you miss her, that you are worried about her, asking her to let you know how she is doing, and letting her know that you are there without reservations to help in any way possible. Repeat every few weeks to every couple of months. That's really all you can do when a relationship has reached the stage you have described.

I am very sorry: For this, but just remember she is your mother. She can't help her disease and didn't cause it or want it just like someone with a cancer. Love her and connect with her the best you can. No one can ask more of you.

Be loving: You can only help people who agree they need help. Unless she is a threat to herself or others, she can not be made to get help without her consent. You can try being honest and loving, telling her her behavior has caused you two to lose touch with each other. Ask her to go to the dr. For an evaluation and offer to go with her. Hopefully, she will go and seek help if she is truly bipolar.