https://www.psycom.net/bipolar-definition-dsm-5/

https://www.psycom.net/bipolar-disorder-difference-one-two Learn about the difference between bipolar type 1 and 2 here.

Find out more about cyclothymia here: https://www.psycom.net/depression.central.cyclothymia.html

More about depressive disorders: https://www.youtube.com/watch?v=KSClXw4Wfxs

https://www.psycom.net/depression-definition-dsm-5-diagnostic-criteria/

Original version of the BDI: https://www.ismanet.org/doctoryourspirit/pdfs/Beck-Depression-Inventory-BDI.pdf 

Updated version of the BDI: https://naviauxlab.ucsd.edu/wp-content/uploads/2020/09/BDI21.pdf