DVT pain is intense and unrelenting. And your leg gets hot to the touch and looks like an eggplant.
I have a lot of nocturnal leg pain. I have since I was a very young child. Icy-Hot helps me a lot - it sort of "covers up" the pain so I can fall asleep, though I may have to reapply it if I don't fall asleep fast enough. (I recommend not getting the vanishing scent ones, btw - they're lighter scented because they have less of the active ingredient, and it doesn't work as well, IMO.)