noun phrase. A serious disability that may be accompanied by Lindsey Buckingham.
Real citation: "Do I hear a tambourine? Watch out for Sudden Onset Stevie Nicks Syndrome."
(March 29, 2007, I Blame the Patriarchy, http://blog.iblamethepatriarchy.com/2007/03/29/patriarchy-blamer-makes-straw-secondwaver-joke/)
Made-up citation: "What disease is known as The Silent Killer? Hint: It's not sudden onset Stevie Nicks syndrome or yodeling fever."