I'm Flyspazz and I'm OSD positive also. I’ve probably been for many years now but only have admitted to it recently.
Some known causes that I’ve found are Dave and Dan, Daniel Madison, and Devo. Beware though, there are many more.
The symptoms that have brought this to my attention were:
1. Shuffling in places your not supposed to be shuffling in. Like church, school, movie theater, work, or the dinner table.
2. One hand shuffling or cutting while the other is performing a different task i.e. Driving, writing or typing, cooking, or bathing.
3. Making up things to shuffle or roll with your hands when cards aren’t around. For example pencils, coins, bottle tops, or paperclips.
As for how to stop it, women (or men in some cases) help to take your mind off it but that’s only works for short time frames.