I didn’t make up the word subjunctivitis. Google it, you’ll get other results. Most of those people are talking about grammar, which is fine, but I’m not really interested in it.
If you want to know what subjuncitivitis means, you have the option of the short version or the long version.
The short working definition is as follows:
“Subjunctivitis is my attempt to lump all the problems of conscience that come with being young, inexperienced, and uncertain under one heading. Its definition will grow with every post that I make to this blog, just like me.”
For the long version, I suggest you read my essay, “Subjunctivitis.” There’s four parts, the first of which is here.