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The inability to finish any type of written communication, i.e. novels, emails, letters, memos, etc...
Todd was in the middle of finishing his next best seller, when his authoritis flared up and caused him to cease writing.

Brook: How is the next novel coming Todd?
Todd: It was going great until my authoritis came back.
Brook: That sucks.
Todd: Tell me about it, this was going to be the best one yet.
by Hemingway34 June 22, 2010
when one gets arhritis from writing
lauren wrote so many short stories that her fingers began to stiffen; a telltale sign of authoritis.
by Mackenzie Schuler May 06, 2007