n. A person who repeatedly proofreads writing because they are paranoid about publishing work that contains typos or other errors.
:-) neologism: typochondriac.
And despite the comedic intent, I could see myself actually using some of these words — as a copy editor, I’m definitely a "typochondriac," or a paranoid proofreader.
One paranoid about spelling mistakes: a typochondriac.
This word appeared regularly in print from the mid-1920s to the mid-1930s, where it referred to a member of a informal club of people who pointed out the spelling and grammar gaffes made by other people. The editor Alden Wood had a column called The Typochondriac that first appeared in 1964.