Top Definition
A condition resulting from the disease that effects the brain in its ability to descern talent. Its effects make people follow their idol even after they are totally washed up (they aren't good at what they do anymore). Causes of this disease are unknown and there is no cure.
Dude, that guy still listens to new Springstein albums? He's totally got fandomitis!
by Jimbopo June 08, 2009
To be trapped within a fandom that you can't get out of no matter what. Mainly because your chosen fandom is too big to leave.
Person: Hey what's he doing on Harry Potter

Person 2: he has a case of fandomitis
by Vpking December 25, 2014

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