Assalamualeykum, i have been dealing with mental illness my whole life. Doctors supsect it is Bipolar disorder and it is biological. While seeking Allahs aid, should i also seek help with the doctors to find the proper treatment? if yes, is it still allowed if the doctors are kafir?

Ustadh AbdulAziz al-Haqqan

Yes, find a trustworthy muslim if not then a trustworthy kafir as this is a serious need.