Polar-itis

polarity
Intrinsic polar separation

A situation in which two individuals or groups have qualities, ideas, or principles that are diametrically opposed to each other

opposition, contradiction, paradox, dichotomy, duality, contrariety
Collins Essential Thesaurus 2nd Edition 2006 © HarperCollins Publishers 2005, 2006

-itis - excessive interest in
-----------------------------------------------------------------------------
A person with polaritis incessantly proves "I am right/you are wrong"


see Edward deBono's book, "I am right, you are wrong"