Yeah, I read that too.
I asked the doctor about that but he said Levaquin doesn't cause that.... I beg to differ but that's the way it is with doctors these days. The right hand doesn't know what the left hand is doing anymore in the medical industry.
He did say that trigger fingers can run in families but nobody in my family has ever had that. He also said that if it's genetic if you get it in one hand you will probably get it in the other. So, if both your pinkies are doing it, it may be genetic.
You might see about getting a cortisone injection, it makes it a little worse for a few days but after that it's gone. Mine returned after about 3-4 months but it isn't as bad as it was at first.....
I can't imagine trying to play guitar with a finger that locks up!