At work yesterday I had the oddest thing cause my hand to flare and freeze up on me (I literally had to pull my fingers apart with the other hand)...dusting. It was "dusty thursday" and everyone in the store is supposed to dust while they are working. I was the opening manager so I had a swiffer duster and was dusting all the fixtures at the front of the store...guess it was too much for me. Lifting vacuums...fine. Dusting...not so much. RSD is so odd...