pottermania 

Fanaticism surrounding fictional characters and themes contained within a series of books written by J.K Rowling, namely "Harry Potter".

Pottermania prior to the release of the new Harry Potter book has reached fever pitch.

pottermania by Dan Fox June 25, 2003

pottermania 

the excessive obsession over a book (ie harry potter). side effects: strange scars on forehead, everything stick-like becomes a wand, start talking with a british accent, and evry conversation has some refrence to the book

A: Hey, how far are you in the new harry potter book?
B Dodu, you mean Harry Pothead?

pottermania by all american duct tape November 4, 2003

ottermania 

A severe fixation on otters that impairs a person’s life and work, and sometimes even sleep.

It became clear to her colleagues that she had delved into complete ottermania when she was sadly found trying to float in the workplace bathroom sink while slamming a small rock onto a crustacean.

ottermania by Dr Bunnygirl October 12, 2019

pottermaniac

one who loves Harry Potter books and films.

Look at Jim he owns all Harry Potters Books he is a real pottermaniac

pottermaniac by SGMlake October 10, 2017