I thought is was well known enough that it didn't need mentioning. Yeah after an injury you treat it with ice and you keep that up until it's gone. Also I should add is when you're sleeping and there's still some swelling you should keep it elevated so that less blood will settle there. Just rest your wrist on your chest, or up on a pillow. When the swelling is all gone you apply heat treatments and avoid banging with it until it's completely healed.